Online English Vocabulary Flashcards for Duplicity and Deceit Words

cahoot (noun) /kəˈhut/
Definition: A secret or illicit partnership or collaboration between two or more parties to achieve a particular goal.
Example Sentence: "The business partners were in cahoots to deceive their investors."
Synonyms: alliance; collusion; connivance; conspiracy; cooperation; machination
Opposite Meaning: independence

clandestine (adjective) /klanˈdɛstɪn/
Definition: Done secretly or in a way that is meant to be hidden or concealed, especially because it is illicit or illegal.
Example Sentence: "He undertook several clandestine operations during his time in the secret service."
Synonyms: concealed; covert; furtive; hidden; private; secret
Opposite Meaning: open

collusion (noun) /kəˈl(j)uːʒ(ə)n/
Definition: A secret or illegal cooperation between two or more parties, typically to deceive or cheat someone or to gain an illegal or unethical advantage.
Example Sentence: "He was accused of collusion with the enemy during the war."
Synonyms: chicanery; collaboration; complicity; connivance; conspiracy; cooperation
Opposite Meaning: honesty

dastardly (adjective) /ˈdæstərdli/
Definition: Characterized by cowardice, underhandedness, or extreme wickedness.
Example Sentence: "The villain’s dastardly plot was foiled by the hero at the last moment."
Synonyms: contemptible; craven; despicable; gutless; mean; sneaky
Opposite Meaning: honorable

disingenuous (adjective) /ˌdɪs(ɪ)nˈdʒɛnjʊəs/
Definition: Slightly dishonest, insincere, or not speaking the complete truth.
Example Sentence: "His apology was seen as disingenuous and lacking sincerity."
Synonyms: contrived; crafty; deceitful; devious; dishonest; dissembling
Opposite Meaning: genuine

eavesdrop (verb) /ˈiːvzdrɒp/
Definition: To listen in on a conversation without the knowledge or consent of the people involved.
Example Sentence: "They tried to eavesdrop on the meeting through the closed door."
Synonyms: bug; earwig; monitor; overhear; pry; snoop
Opposite Meaning: ignore

fabricate (verb) /ˈfabrɪkeɪt/
Definition: To create or invent something, typically a story, statement, or information, often with the intent to deceive or mislead others.
Example Sentence: "He decided to fabricate a plausible excuse to get out of the meeting."
Synonyms: concoct; contrive; counterfeit; craft; devise; fake
Opposite Meaning: tell truth

fraudulent (adjective) /ˈfrɔːdjʊlənt/
Definition: Intentionally deceptive or deceitful, with the intention of gaining an unfair or illegal advantage.
Example Sentence: "The fake degree was detected as fraudulent and the student was expelled."
Synonyms: bogus; counterfeit; dishonest; fake; forged; phony
Opposite Meaning: honest

furtive (adjective) /ˈfəːtɪv/
Definition: Attempting to avoid notice or attention by sly or cautious stealthiness, typically because of guilt.
Example Sentence: "He had a furtive glance around the room before stealing the money."
Synonyms: clandestine; covert; hidden; secretive; skulking; slinking
Opposite Meaning: open

glib (adjective) /ɡlɪb/
Definition: Speaking in a superficial or insincere way, often using smooth words or charm to deceive or mislead others.
Example Sentence: "The salesperson's glib pitch failed to impress the potential customer."
Synonyms: artful; articulate; eloquent; facile; fluent; insincere
Opposite Meaning: sincere

guile (noun) /ɡʌɪl/
Definition: The quality of being crafty, cunning, or artful in deception or manipulation.
Example Sentence: "The detective was impressed by the thief's guile and ability to evade capture."
Synonyms: artifice; canniness; craftiness; cunning; deceit; deception
Opposite Meaning: honesty

hypocrisy (noun) /hɪˈpɒkrəsi/
Definition: The practice of professing beliefs, feelings, or virtues that one does not actually hold or possess.
Example Sentence: "His speeches were filled with hypocrisy, as his actions contradicted his words."
Synonyms: artificiality; dishonesty; dissembling; duplicity; falsity; insincerity
Opposite Meaning: sincerity

insidious (adjective) /ɪnˈsɪdɪəs/
Definition: Harmful or dangerous in a subtle or gradual way, rather than being obvious or immediate.
Example Sentence: "The insidious corruption within the organization was eventually exposed."
Synonyms: crafty; cunning; deceitful; deceptive; devious; dishonest
Opposite Meaning: overt

invasive (adjective) /ɪnˈveɪsɪv/
Definition: Intruding or spreading into a space or environment where it is not wanted or where it causes harm or disruption.
Example Sentence: "The invasive plant species is spreading rapidly and disrupting the local ecosystem."
Synonyms: disruptive; encroaching; impinging; incursive; infiltrating; interloping
Opposite Meaning: welcome

machiavellian
Not found in Dictionary.
malign (adjective) /məˈlʌɪn/
Definition: Harmful, malevolent, or characterized by ill intent and a desire to cause harm or damage.
Example Sentence: "The malign influence of social media on young people is a growing concern."
Synonyms: cruel; hateful; hostile; malevolent; malicious; malignant
Opposite Meaning: benign

malinger (verb) /məˈlɪŋɡə/
Definition: To feign illness or disability in order to avoid work or responsibility.
Example Sentence: "The patient's attempts to malinger were quickly detected by the medical staff."
Synonyms: avoid; dodge; evade; fake; idle; lazy
Opposite Meaning: toil

mendacious (adjective) /mɛnˈdeɪʃəs/
Definition: Habitually or intentionally dishonest, deceptive or untruthful.
Example Sentence: "The company was criticized for its mendacious advertising claims."
Synonyms: deceitful; deceptive; dishonest; disingenuous; duplicitous; erroneous
Opposite Meaning: truthful

misinformation (noun) /ˌmɪsɪnfəˈmeɪʃn/
Definition: False or inaccurate information that is spread intentionally or unintentionally.
Example Sentence: "The news outlet was criticized for spreading misinformation in their coverage."
Synonyms: deceit; deception; defamation; disinformation; distortions; fabrication
Opposite Meaning: truth

peculate (verb) /ˈpɛkjʊleɪt/
Definition: To embezzle or steal money or property, particularly funds that have been entrusted to someone's care or management.
Example Sentence: "The accountant was caught attempting to peculate funds from the company."
Synonyms: appropriate; arrogate; defraud; expropriate; loot; pilfer
Opposite Meaning: return

perfidious (adjective) /pəˈfɪdɪəs/
Definition: Disloyal, traitorous or faithless, tending to betray or deceive.
Example Sentence: "His perfidious tendencies made it difficult for him to maintain relationships."
Synonyms: backstabbing; betraying; deceitful; deceptive; dishonest; disloyal
Opposite Meaning: loyal

pernicious (adjective) /pəˈnɪʃəs/
Definition: Harmful or destructive, especially in a gradual or subtle way.
Example Sentence: "Overuse of pesticides can have pernicious effects on the environment."
Synonyms: adverse; damaging; dangerous; devastating; hurtful; malicious
Opposite Meaning: beneficial

pestilent (adjective) /ˈpɛstɪlənt/
Definition: Harmful, destructive, or deadly, particularly in the context of diseases and plagues.
Example Sentence: "The pestilent disease spread rapidly throughout the crowded city."
Synonyms: dangerous; detrimental; fatal; injurious; lethal; pernicious
Opposite Meaning: harmless

phony (adjective) /ˈfəʊni/
Definition: Fake, fraudulent, or not genuine, often with the intent to deceive or mislead.
Example Sentence: "The documentary exposed the phony claims of the self-proclaimed expert."
Synonyms: affected; bogus; counterfeit; ersatz; fake; false
Opposite Meaning: genuine

prevaricate (verb) /prɪˈvarɪkeɪt/
Definition: To speak or act in a way that is evasive, non-committal, or untruthful.
Example Sentence: "Politicians often prevaricate when confronted with tough questions."
Synonyms: cavil; deceive; distort; dodge; equivocate; evade
Opposite Meaning: be direct

profligate (adjective) /ˈprɒflɪɡət/
Definition: Recklessly wasteful or extravagant with money or resources.
Example Sentence: "The politicians were accused of profligate spending of public funds."
Synonyms: decadent; dissipated; dissolute; extravagant; immoral; improvident
Opposite Meaning: thrifty

quisling (noun) /ˈkwɪzlɪŋ/
Definition: A traitor who collaborates with an enemy occupying their country.
Example Sentence: "The quisling leader was arrested and tried for treason after the war."
Synonyms: backstabber; betrayer; collaborator; conspirator; defector; deserter
Opposite Meaning: loyalist

renege (verb) /rɪˈniːɡ
Definition: To break a promise, commitment, or agreement that was previously made, often resulting in disappointment or betrayal of trust.
Example Sentence: "The company's reputation suffered when they chose to renege on their warranties."
Synonyms: backpedal; backtrack; default; recall; recant; repudiate
Opposite Meaning: honor

skullduggery (noun) /skʌlˈdʌɡ(ə)ri/
Definition: Dishonest or deceitful behavior that is intended to deceive or defraud others.
Example Sentence: "The skullduggery of the criminal organization was finally uncovered by the police."
Synonyms: deceit; trickery; fraud; chicanery; deception; duplicity
Opposite Meaning: honesty

sociopath (noun) /ˈsəʊʃɪə(ʊ)paθ/
Definition: A person with a personality disorder characterized by a pervasive disregard for the rights of others.
Example Sentence: "He was a diagnosed sociopath and showed no remorse for his actions."
Synonyms: aberrant; amoral; antisocial; deviant; immoral; psychopath
Opposite Meaning: empath

spurious (adjective) /ˈspjʊərɪəs/
Definition: False or fake, often with the intention of deceiving or misleading others.
Example Sentence: "The report was widely criticized for its spurious conclusions."
Synonyms: artificial; bogus; contrived; feigned; forged; fraudulent
Opposite Meaning: genuine

sully (verb) /ˈsʌli/
Definition: To tarnish, stain, or mar something, typically referring to the reputation, honor, or purity of a person, place, or thing.
Example Sentence: "Do not let their harsh words sully your positive spirit."
Synonyms: blemish; contaminate; defile; dirty; discolor; mar
Opposite Meaning: purify

tainted (adjective) /teɪnt/
Definition: Contaminated, corrupted, or compromised by the presence of undesirable elements or influences.
Example Sentence: "The athlete's career was tainted by accusations of doping."
Synonyms: defiled; diluted; dirtied; impaired; impure; polluted
Opposite Meaning: pure

tarnish (verb) /ˈtɑːnɪʃ/
Definition: To degrade or diminish the reputation, prestige, or worth of a person, object, or concept.
Example Sentence: "The scandal will tarnish his reputation for years to come."
Synonyms: blemish; damage; degrade; distort; impair; muddy
Opposite Meaning: honor

traduce (verb) /trəˈdjuːs/
Definition: To speak or write about someone or something in a way that is false, malicious or damaging to their reputation.
Example Sentence: "She chose to traduce her former colleague's work to gain an unfair advantage."
Synonyms: decry; defame; denigrate; deprecate; detract; disparage
Opposite Meaning: praise

treacherous (adjective) /ˈtrɛtʃ(ə)rəs/
Definition: Untrustworthy, deceitful, and likely to betray trust or confidence.
Example Sentence: "The treacherous behavior of the politician was a violation of the public's trust."
Synonyms: deceitful; disloyal; faithless; perfidious; traitorous; unfaithful
Opposite Meaning: trustworthy

wangle (verb) /ˈwaŋɡl/
Definition: To manipulate or maneuver a situation in a clever or devious way, often to one's own advantage.
Example Sentence: "He managed to wangle his way into the VIP section of the concert."
Synonyms: arrange; contrive; engineer; fiddle; finagle; machinate
Opposite Meaning: play straight

wily (adjective) /ˈwʌɪli/
Definition: Clever, cunning, and skilled at using deceit or manipulation to achieve their goals.
Example Sentence: "He was a wily salesman, able to talk people into buying things they didn't need."
Synonyms: calculating; canny; crafty; devious; disingenuous; guileful
Opposite Meaning: naive