English Synonyms for Illusion and Insincerity Vocabulary Words – Online Quiz!

aberration (noun) /ˌæb əˈreɪ ʃən/
Meaning: It implies a divergence from the usual or desired course, pattern, or behavior.
Find the synonym: Which option is closest in meaning to aberration?
Options: anomaly; norm; regularity; standard
Answer: anomaly
Synonyms: anomaly; departure; deviation; distortion; divergence; eccentricity; idiosyncrasy; irregularity; oddity; peculiarity; quirk; variation
Example: "The sudden change in behavior was seen as an aberration from his usual calm demeanor."

belie (verb) /bɪˈlʌɪ/
Meaning: When an action or appearance 'belies' the reality, it implies that there is a disconnect between what is perceived and what is actually the case.
Find the synonym: Which option is closest in meaning to belie?
Options: misrepresent; reveal; disclose; show
Answer: misrepresent
Synonyms: conceal; disguise; distort; falsify; feign; hide; mask; misinterpret; misrepresent
Example: "The stillness of the lake at dawn does belie the teeming life beneath its surface."

charade (noun) /ʃəˈrɑːd/
Meaning: In this sense, a charade is a pretense, a facade, or a show that is put on to deceive or hide the true nature of something.
Find the synonym: Which option is closest in meaning to charade?
Options: pretense; genuineness; honesty; authenticity
Answer: pretense
Synonyms: act; deception; façade; fake; farce; pantomime; parody; pretense; show
Example: "The company's commitment to sustainability was exposed as a charade when it was revealed they were still using hazardous materials."

chicanery (noun) /ʃɪˈkeɪnəri/
Meaning: The word is often in the context of legal or political matters.
Find the synonym: Which option is closest in meaning to chicanery?
Options: trickery; honesty; integrity; straightforwardness
Answer: trickery
Synonyms: trickery; deception; duplicity; subterfuge; scheming; craftiness; cunning; artifice; guile; ruse
Example: "His chicanery in the stock market earned him a hefty prison sentence."

clandestine (adjective) /klanˈdɛstɪn/
Meaning: It can also describe something that is done covertly or surreptitiously, often in order to avoid detection or scrutiny.
Find the synonym: Which option is closest in meaning to clandestine?
Options: secretive; open; public; overt
Answer: secretive
Synonyms: concealed; covert; furtive; hidden; private; secret; sly; sneaky; stealthy; surreptitious; unauthorized; undercover
Example: "They had a clandestine meeting in a remote location, away from prying eyes."

cockiness (noun) /ˈkɒkɪnɪs/
Meaning: It denotes a sense of overconfidence or a display of superiority, often accompanied by a disregard for others' opinions or a tendency to boast about one's accomplishments.
Find the synonym: Which option is closest in meaning to cockiness?
Options: arrogance; humility; modesty; shyness
Answer: arrogance
Synonyms: arrogance; boastfulness; braggadocio; conceit; haughtiness; hubris; overconfidence; smugness; superiority; swagger; vanity
Example: "His cockiness became evident as he boasted about his achievements to everyone."

collude (verb) /kəˈl(j)uːd/
Meaning: It often implies that the parties involved are acting in a deceptive or dishonest way in order to achieve their goals.
Find the synonym: Which option is closest in meaning to collude?
Options: conspire; compete; oppose; contend
Answer: conspire
Synonyms: collaborate; complot; connive; conspire; contrive; devise; engineer; machinate; scheme
Example: "The two companies did not realize that by sharing trade secrets, they would unintentionally collude against competitors."

collusion (noun) /kəˈl(j)uːʒ(ə)n/
Meaning: It can also refer to a secret agreement or cooperation between two or more parties in order to deceive or cheat someone, typically for personal gain.
Find the synonym: Which option is closest in meaning to collusion?
Options: conspiracy; honesty; integrity; independence
Answer: conspiracy
Synonyms: chicanery; collaboration; complicity; connivance; conspiracy; cooperation; deceit; duplicity; fraud; intrigue; machination; plotting
Example: "The government launched an investigation into suspected collusion between the two companies."

contrived (adjective) /ənˈtraɪvd/
Meaning: It describes a situation, event, or object that appears forced, unnatural, or lacking in authenticity.
Find the synonym: Which option is closest in meaning to contrived?
Options: artificial; natural; genuine; spontaneous
Answer: artificial
Synonyms: affected; artificial; concocted; fabricated; forced; insincere; manufactured; pretentious; staged; unnatural
Example: "The contrived plot twist in the novel was met with mixed reviews from readers."

deceitful (adjective) /dɪˈsit fəl/
Meaning: It suggests a deliberate intention to trick, manipulate, or withhold the truth for personal gain or advantage.
Find the synonym: Which option is closest in meaning to deceitful?
Options: deceptive; honest; truthful; sincere
Answer: deceptive
Synonyms: crafty; deceptive; dishonest; duplicitous; false; fraudulent; insincere; sly; sneaky; treacherous; underhanded; untruthful
Example: "She discovered that her so-called friend had been deceitful all along."

deception (noun) /dɪˈsɛpʃn/
Meaning: Deception is It can be done by individuals or groups and can take many forms, such as lying, withholding information, disguising one's true intentions or feelings, or creating false impressions.
Find the synonym: Which option is closest in meaning to deception?
Options: deceit; honesty; truthfulness; openness
Answer: deceit
Synonyms: cheating; disinformation; fakery; fraud; hypocrisy; insincerity; treachery; trickery; untruth
Example: "The deception was so skillful that no one suspected the true motives behind his actions."

decoy (noun) /ˈdiːkɔɪ/
Meaning: Decoys are commonly employed in various contexts, including hunting and fishing, where they are used to simulate the appearance or behavior of prey or targets to draw the attention of game or fish.
Find the synonym: Which option is closest in meaning to decoy?
Options: lure; deterrent; repellent; discouragement
Answer: lure
Synonyms: allurement; attraction; bait; camouflage; ensnarement; enticement; inducement; trap
Example: "The hunter strategically placed a decoy to attract the ducks."

delude (verb) /dɪluːd/
Meaning: When someone deludes another, they intentionally lead them to believe something that is not true or to form a mistaken perception.
Find the synonym: Which option is closest in meaning to delude?
Options: mislead; enlighten; inform; clarify
Answer: mislead
Synonyms: bamboozle; beguile; betray; cheat; deceive; dupe; fool; hoax; hoodwink; mislead; swindle; trick
Example: "I wouldn't let his sweet words delude me anymore."

despotic (adjective) /dɪˈspɒt ɪk/
Meaning: When something or someone is described as despotic, it implies the existence of a dictatorial authority, where a single individual or group wields unrestricted control over others.
Find the synonym: Which option is closest in meaning to despotic?
Options: tyrannical; democratic; egalitarian; liberal
Answer: tyrannical
Synonyms: absolute; arbitrary; authoritarian; autocratic; dictatorial; domineering; harsh; oppressive; repressive; ruthless; totalitarian; tyrannical
Example: "The despotic ruler silenced all opposition and crushed any dissent."

duplicitous (adjective) /duˈplɪs ɪ təs/
Meaning: It describes someone who deliberately presents themselves as honest or trustworthy while concealing their true intentions or engaging in deceptive behavior.
Find the synonym: Which option is closest in meaning to duplicitous?
Options: deceitful; honest; sincere; straightforward
Answer: deceitful
Synonyms: cunning; deceitful; deceptive; dishonest; fraudulent; hypocritical; insincere; sly; treacherous; underhanded; untruthful
Example: "The politician's duplicitous statements during the campaign shattered the public's trust in his integrity."

ersatz (adjective) /ˈɛrˌsɑts/
Meaning: When applied to products, objects, or even personalities, it signifies that they are not the real or original version but rather a copy or imitation that may fall short in terms of quality or authenticity.
Find the synonym: Which option is closest in meaning to ersatz?
Options: substitute; authentic; genuine; original
Answer: substitute
Synonyms: artificial; bogus; counterfeit; dummy; fake; false; faux; mock; pretend; sham; synthetic
Example: "The restaurant served an ersatz version of the traditional dish that left much to be desired."

gaslight (verb) /ˈɡæslaɪt/
Meaning: It is a form of psychological manipulation aimed at distorting another person's reality and undermining their confidence and sense of self.
Find the synonym: Which option is closest in meaning to gaslight?
Options: manipulate; reassure; affirm; validate
Answer: manipulate
Synonyms: bamboozle; confuse; deceive; delude; distort; falsify; manipulate; mislead; trick; undermine
Example: "She tried to gaslight him into thinking he was the one who forgot their anniversary."

glib (adjective) /ɡlɪb/
Meaning: The term comes from the Middle English word "glibbe" which means "smooth-tongued" or "slippery.
Find the synonym: Which option is closest in meaning to glib?
Options: slick; sincere; heartfelt; genuine
Answer: slick
Synonyms: artful; articulate; eloquent; facile; fluent; insincere; loquacious; persuasive; plausible; slick; slippery; suave
Example: "He was criticized for his glib response to a serious question."

guise (noun) /ɡʌɪz/
Meaning: It often implies that this appearance may be deceptive, concealing the true nature or intentions underneath.
Find the synonym: Which option is closest in meaning to guise?
Options: appearance; reality; truth; openness
Answer: appearance
Synonyms: camouflage; cloak; cover; disguise; façade; face; front; mask; pretense; semblance; show
Example: "The company's environmental efforts were just a guise to improve their public image."

illusion (noun) /ɪˈl(j)uːʒn/
Meaning: It is a trick of the mind that can be caused by a variety of factors, including the physical properties of the stimulus, the context in which it is viewed, and the observer's own cognitive and perceptual processes.
Find the synonym: Which option is closest in meaning to illusion?
Options: mirage; reality; truth; actuality
Answer: mirage
Synonyms: deception; dream; fallacy; fantasy; hallucination; mirage; phantasm; unreality
Example: "The magician created a mesmerizing illusion that left the audience in awe."

imposter (noun) /ɪmˈpɒs tər/
Meaning: This term commonly denotes a person who assumes a false identity, often adopting the appearance, behavior, or characteristics of another individual for personal gain or to carry out fraudulent activities.
Find the synonym: Which option is closest in meaning to imposter?
Options: pretender; authentic; genuine; real
Answer: pretender
Synonyms: charlatan; counterfeit; deceiver; fake; fraud; imitator; impostor; masquerader; phony; pretender; sham; trickster
Example: "The crew members were on high alert, knowing there was an imposter among them."

impostor (noun) /ɪmˈpɒs tər/
Meaning: An impostor is someone who assumes a false identity, character, or role, often for personal gain, manipulation, or fraudulent purposes.
Find the synonym: Which option is closest in meaning to impostor?
Options: fraud; honest; genuine; legitimate
Answer: fraud
Synonyms: charlatan; cheat; deceiver; fake; fraud; imposter; masquerader; phony; pretender; sham; swindler; trickster
Example: "The impostor gained access to confidential information by posing as a trusted employee."

iniquitous (adjective) /ɪˈnɪkwɪtəs/
Meaning: When something is deemed iniquitous, it signifies a profound departure from accepted moral or ethical standards, often involving actions that are blatantly unfair, oppressive, or morally reprehensible.
Find the synonym: Which option is closest in meaning to iniquitous?
Options: wicked; righteous; just; ethical
Answer: wicked
Synonyms: abominable; atrocious; base; heinous; immoral; nefarious; reprehensible; vicious; wicked
Example: "The iniquitous conditions in the factories led to the deaths of many workers."

insidious (adjective) /ɪnˈsɪdɪəs/
Meaning: It can refer to an action or a plan that is intended to trap or deceive someone and it can also refer to an illness that progresses slowly and undetectably.
Find the synonym: Which option is closest in meaning to insidious?
Options: stealthy; overt; harmless; benign
Answer: stealthy
Synonyms: crafty; cunning; deceitful; deceptive; devious; dishonest; guileful; Machiavellian; scheming; sly; sneaky; stealthy
Example: "The insidious effects of air pollution on health are often underestimated."

invasive (adjective) /ɪnˈveɪsɪv/
Meaning: Invasive species, for example, are non-native plants or animals that are introduced into an ecosystem and quickly begin to spread and displace native species.
Find the synonym: Which option is closest in meaning to invasive?
Options: intrusive; welcome; respectful; unobtrusive
Answer: intrusive
Synonyms: disruptive; encroaching; impinging; incursive; infiltrating; interloping; intrusive; meddling; obtrusive; penetrating; trespassing; unwanted
Example: "The invasive species threaten the balance of our local ecosystems."

lampoon (verb) /lamˈpuːn/
Meaning: It implies a tendency to use humor or wit to make a point, and a desire to challenge or expose flaws or weaknesses in the target of the satire.
Find the synonym: Which option is closest in meaning to lampoon?
Options: satirize; praise; laud; commend
Answer: satirize
Synonyms: burlesque; caricature; deride; imitate; mimic; parody; pasquinade; ridicule; satirize
Example: "Writers often lampoon politicians with witty satire to expose their flaws."

Machiavellian (adjective) /ˌmakɪəˈvɛlɪən/
Meaning: The term is derived from the name of the 16th-century Italian political philosopher Niccolò Machiavelli, who wrote "The Prince," a treatise on politics and power.
Find the synonym: Which option is closest in meaning to Machiavellian?
Options: devious; ethical; principled; moral
Answer: devious
Synonyms: amoral; artful; astute; calculating; crafty; cunning; deceitful; devious; duplicitous; manipulative; ruthless; scheming
Example: "He devised a Machiavellian plan to gain control and manipulate those around him."

necromancy (noun) /ˈnɛkrə(ʊ)mansi/
Meaning: It is a type of divination that is often associated with the supernatural and the occult.
Find the synonym: Which option is closest in meaning to necromancy?
Options: sorcery; science; rationality; reality
Answer: sorcery
Synonyms: demonology; divination; occultism; sorcery; thaumaturgy; voodoo; witchcraft; wizardry
Example: "Necromancy is often associated with the conjuring of spirits from the afterlife."

parody (noun) /ˈparədi/
Meaning: The idea behind a parody is to mock or make fun of the original work by exaggerating its characteristics or by changing its meaning in a humorous way.
Find the synonym: Which option is closest in meaning to parody?
Options: caricature; homage; tribute; seriousness
Answer: caricature
Synonyms: burlesque; caricature; comedy; farce; imitation; mockery; satire; spoof; takeoff
Example: "The parody of the popular movie had the audience in stitches with its hilarious take on the original plot."

pasquinade (noun) /ˌpæs kwəˈneɪd/
Meaning: This term is often associated with a sharp and witty critique, delivered with a dose of humor or irony.
Find the synonym: Which option is closest in meaning to pasquinade?
Options: satire; praise; flattery; commendation
Answer: satire
Synonyms: burlesque; caricature; comedy; farce; mimic; mock; parody; ridicule; sketch; skit; spoof; squib
Example: "The satirical pasquinade in the newspaper skewered political hypocrisy."

pestilent (adjective) /ˈpɛstɪlənt/
Meaning: The term is often used to describe epidemics or pandemics that have devastating effects on human populations, as well as the living conditions or environments that facilitate the spread of such diseases.
Find the synonym: Which option is closest in meaning to pestilent?
Options: deadly; harmless; safe; beneficial
Answer: deadly
Synonyms: dangerous; detrimental; fatal; injurious; lethal; pernicious; poisonous; terminal; toxic; vicious
Example: "The pestilent mosquito buzzed around my ear all night."

pretender (noun) /prɪˈtɛn dər/
Meaning: It is often associated with someone who falsely asserts their right to a position of authority, power, or inheritance.
Find the synonym: Which option is closest in meaning to pretender?
Options: impostor; legitimate; rightful; authentic
Answer: impostor
Synonyms: charlatan; cheat; deceiver; fake; fraud; imposter; impostor; phony; quack; sham; swindler; trickster
Example: "The pretender seized the throne, though the rightful heir lived in exile."

ruse (noun) /ruːz/
Meaning: This can involve a wide range of techniques, such as disguises, misdirection, false information, or other forms of manipulation or subterfuge.
Find the synonym: Which option is closest in meaning to ruse?
Options: trick; honesty; openness; straightforwardness
Answer: trick
Synonyms: artifice; deceit; delusion; fraud; hoax; maneuver; ploy; sham; stratagem; stunt; subterfuge
Example: "She used a clever ruse to trick her opponent into revealing their strategy."

sanctimonious (adjective) /ˌsaŋ(k)tɪˈməʊnɪəs/
Meaning: The term "sanctimonious" is an adjective that is used to describe a person who is excessively or hypocritically pious or morally self-righteous.
Find the synonym: Which option is closest in meaning to sanctimonious?
Options: self-righteous; sincere; genuine; honest
Answer: self-righteous
Synonyms: hypocritical; insincere; moralizing; pharisaical; pious; preachy; priggish; sanctified; smug; supercilious; unctuous; virtuous
Example: "He wore a sanctimonious smile as he lectured me about environmental responsibility."

satirize (verb) /ˈsæt əˌraɪz/
Meaning: It involves employing exaggerated or absurd elements to expose flaws, vices, or shortcomings, often with the intent to bring about social or political change or to simply provide entertainment.
Find the synonym: Which option is closest in meaning to satirize?
Options: mock; praise; commend; glorify
Answer: mock
Synonyms: caricature; chaff; deride; jeer; jest; lampoon; mock; parody; ridicule; skewer; taunt; tease
Example: "The clever cartoonist used satire to mock politicians during the election campaign."

scheming (adjective) /ˈski mɪŋ/
Meaning: It describes a person who engages in calculated and cunning behavior, often with the intention of gaining an advantage or controlling a situation to their benefit.
Find the synonym: Which option is closest in meaning to scheming?
Options: conniving; honest; sincere; straightforward
Answer: conniving
Synonyms: artful; calculating; conniving; crafty; cunning; devious; guileful; Machiavellian; manipulative; sly; treacherous; wily
Example: "The scheming student crafted a plan to steal the final exam's answers."

sham (noun) /ʃæm/
Meaning: For example, a counterfeit product or a fraudulent scheme can be described as a sham.
Find the synonym: Which option is closest in meaning to sham?
Options: fake; authentic; genuine; real
Answer: fake
Synonyms: charade; counterfeit; deception; forgery; fraud; hoax; pretense; ruse; trickery
Example: "The designer handbag turned out to be a complete sham."

shoddy (adjective) /ˈʃɒd i/
Meaning: When something is deemed shoddy, it implies that it has been hastily or carelessly made or executed, resulting in a substandard or inferior product.
Find the synonym: Which option is closest in meaning to shoddy?
Options: inferior; high-quality; durable; well-made
Answer: inferior
Synonyms: amateurish; cheap; faulty; inadequate; inferior; lousy; low-quality; mediocre; poor; sloppy; substandard
Example: "I was disappointed with the shoddy craftsmanship of the furniture I purchased."

simulated (adjective) /ˈsɪmjʊˌleɪtɪd/
Meaning: It indicates that a representation or model has been created to simulate the appearance, behavior, or characteristics of the original object, event, or system.
Find the synonym: Which option is closest in meaning to simulated?
Options: artificial; real; authentic; genuine
Answer: artificial
Synonyms: counterfeit; emulated; ersatz; fabricated; false; imitated; mimicked; recreated; replicated; synthetic; unreal; virtual
Example: "The flight simulator provided a simulated experience of flying an airplane."

skullduggery (noun) /skʌlˈdʌɡ(ə)ri/
Meaning: It describes actions that are considered underhanded or sneaky, and is often used to describe behavior that is illegal or unethical.
Find the synonym: Which option is closest in meaning to skullduggery?
Options: trickery; honesty; integrity; straightforwardness
Answer: trickery
Synonyms: deceit; trickery; fraud; chicanery; deception; duplicity; cheating; slyness; guile
Example: "The company was accused of skullduggery in their business practices."

sophistry (noun) /ˈsɒfɪstri/
Meaning: It is a form of reasoning that appears to be logical and rational, but is actually flawed or invalid.
Find the synonym: Which option is closest in meaning to sophistry?
Options: fallacy; truth; honesty; logic
Answer: fallacy
Synonyms: ambiguity; casuistry; chicanery; cunning; deceit; deception; delusion; dishonesty; equivocation; fallacy; manipulation; misconception
Example: "He was accused of using sophistry to make his argument sound more convincing."

specious (adjective) /ˈspiːʃəs/
Meaning: It refers to an argument, claim, or appearance that seems to be reasonable or convincing, but upon closer examination, is revealed to be flawed or misleading.
Find the synonym: Which option is closest in meaning to specious?
Options: deceptive; genuine; authentic; real
Answer: deceptive
Synonyms: beguiling; deceitful; deceiving; deceptive; delusive; fallacious; false; illusory; incorrect; insincere; misleading; plausible
Example: "She made a specious claim that there was no scientific evidence to support."

symbolic (adjective) /sɪmˈbɒl ɪk/
Meaning: It pertains to the use of symbols or symbolic actions to convey ideas, emotions, or values.
Find the synonym: Which option is closest in meaning to symbolic?
Options: representational; literal; actual; real
Answer: representational
Synonyms: allegorical; emblematic; figurative; iconic; indicative; meaningful; metaphorical; representative; significant; suggestive; token
Example: "The red rose is often seen as a symbolic gesture of love."

taboo (noun) /təˈbuː/
Meaning: It is often associated with activities or behaviors that are considered morally, socially, or culturally unacceptable or forbidden.
Find the synonym: Which option is closest in meaning to taboo?
Options: prohibition; accepted; embraced; permissible
Answer: prohibition
Synonyms: censorship; exclusion; forbiddance; forbidden; inappropriate; interdiction; outlawed; prohibition; proscription; restriction; unacceptable; unmentionable
Example: "The use of certain drugs is considered a taboo and is illegal in many countries."

tarnish (verb) /ˈtɑːnɪʃ/
Meaning: When one 'tarnishes' something, they engage in actions or behaviors that lead to a loss of esteem or quality.
Find the synonym: Which option is closest in meaning to tarnish?
Options: blemish; honor; enhance; elevate
Answer: blemish
Synonyms: blemish; damage; degrade; distort; impair; muddy; smear; spoil; stain; sully; taint
Example: "The company's unethical practices have tarnished its image in the public eye."

trickery (noun) /ˈtrɪk ə ri/
Meaning: It involves employing sly and deceptive tactics with the intention of gaining an advantage, achieving a specific outcome, or misleading someone.
Find the synonym: Which option is closest in meaning to trickery?
Options: deceit; honesty; integrity; sincerity
Answer: deceit
Synonyms: artifice; chicanery; cunning; deceit; deception; duplicity; fraud; guile; manipulation; scheming; subterfuge; treachery
Example: "The magician amazed the audience with his clever trickery."

unvirtuous (adjective) /ˌʌnˈvɜːʧuəs/
Meaning: When something is deemed unvirtuous, it implies a deviation from principles of righteousness, integrity, or virtuous conduct.
Find the synonym: Which option is closest in meaning to unvirtuous?
Options: immoral; virtuous; moral; righteous
Answer: immoral
Synonyms: corrupt; depraved; dishonest; dishonorable; immoral; unethical; unprincipled; unscrupulous
Example: "His unvirtuous actions tarnished his once-pristine reputation."

vanity (noun) /ˈvanɪti/
Meaning: Vanity manifests as a fixation on one's physical appearance, achievements, or status, often driven by a deep-seated need for approval and attention.
Find the synonym: Which option is closest in meaning to vanity?
Options: self-admiration; humility; modesty; selflessness
Answer: self-admiration
Synonyms: airs; arrogance; conceit; egotism; narcissism; pretension; pride; vainglory; vainness
Example: "Her vanity led her to spend hours perfecting her makeup."

venal (adjective) /ˈviːnl/
Meaning: A venal person may engage in bribery, extortion, or other illegal activities for financial benefit.
Find the synonym: Which option is closest in meaning to venal?
Options: corrupt; honorable; ethical; incorruptible
Answer: corrupt
Synonyms: bribable; buyable; corruptible; crooked; dishonest; grafting; mercenary; purchasable; rapacious; unethical; unprincipled; unscrupulous
Example: "The venal politician was embroiled in a bribery scandal."

wangle (verb) /ˈwaŋɡl/
Meaning: When someone "wangles" something, they use their skills, knowledge, or influence to achieve a desired outcome without following the usual rules or procedures.
Find the synonym: Which option is closest in meaning to wangle?
Options: finagle; play straight; be honest; straightforward
Answer: finagle
Synonyms: arrange; contrive; engineer; fiddle; finagle; machinate; manage; negotiate; plot; scheme
Example: "To secure the contract, we need to wangle a meeting with the CEO."

zany (adjective) /ˈzeɪ ni/
Meaning: It describes a person, behavior, or situation that is characterized by unconventional antics, exaggerated gestures, or unconventional choices.
Find the synonym: Which option is closest in meaning to zany?
Options: wacky; normal; conventional; serious
Answer: wacky
Synonyms: absurd; bizarre; eccentric; farcical; kooky; madcap; nutty; offbeat; outrageous; quirky; unconventional; wacky
Example: "The zany clown had the children laughing uncontrollably with his silly antics."