Online English Vocabulary Flashcards for Character Traits and Behavior Words

bashful (adjective) /ˈbaʃf(ʊ)l/
Definition: Shy, reserved, or timid, often in social situations or when encountering unfamiliar people or attention.
Example Sentence: "The bashful artist was hesitant to show their work to others."
Synonyms: coy; demure; diffident; nervous; reserved; reticent
Opposite Meaning: outgoing

bearing (noun) /ˈbɛːrɪŋ/
Definition: A person's demeanor or outward appearance, particularly in terms of their attitude, confidence, and presence.
Example Sentence: "The soldier's bearing was stoic and unyielding."
Synonyms: attitude; behavior; carriage; comportment; conduct; demeanor
Opposite Meaning: informal

biddable (adjective) /ˈbɪdəbəl/
Definition: Compliant, obedient, and easily influenced or directed by others.
Example Sentence: "The biddable student never questioned her teacher's authority."
Synonyms: acquiescent; amenable; controllable; cooperative; meek; pliable
Opposite Meaning: defiant

boisterous (adjective) /ˈbɔɪst(ə)rəs/
Definition: Energetic, noisy, and lively in a spirited or rowdy manner.
Example Sentence: "The boisterous children were running around the playground, causing chaos."
Synonyms: clamorous; disorderly; noisy; obstreperous; riotous; rollicking
Opposite Meaning: quiet

chaste (adjective) /ʧeɪst/
Definition: Pure and virtuous, with a strict adherence to moral and ethical principles.
Example Sentence: "She wore a chaste white dress to her wedding."
Synonyms: celibate; clean; decent; immaculate; innocent; modest
Opposite Meaning: promiscuous

chauvinist (noun) /ˈʃəʊvɪnɪst/
Definition: A person displaying excessive or prejudiced belief in the superiority or dominance of their own cause or group.
Example Sentence: "The chauvinist saw no merit in other cultures' traditions."
Synonyms: bigot; jingoist; nationalist; nativist; partisan; superpatriot
Opposite Meaning: egalitarian

civilized (adjective) /ˈsɪv əˌlaɪzd/
Definition: Displaying a high degree of refinement, social development, and adherence to cultural norms and values.
Example Sentence: "The civilized debate allowed for a respectful exchange of ideas and opinions."
Synonyms: civil; courteous; cultured; decorous; genteel; mannerly
Opposite Meaning: barbaric

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

conscience (noun) /ˈkɒnʃns/
Definition: An inner sense of what is right or wrong that helps to guide a person's actions and decisions.
Example Sentence: "He had a clear conscience, knowing that he had done the right thing."
Synonyms: character; ethics; gut; heart; mind; morals
Opposite Meaning: indifference

contort (verb) /kənˈtɔrt/
Definition: To twist, distort, or deform something, typically an object, body part, or idea, in a way that deviates from its natural or expected shape or arrangement.
Example Sentence: "We watched the gymnasts contort effortlessly through their routines."
Synonyms: bend; convolute; curl; curve; deform; disfigure
Opposite Meaning: straighten

culpable (adjective) /ˈkʌlpəb(ə)l/
Definition: Deserving of blame, guilt, or responsibility for a particular action, decision, or situation.
Example Sentence: "The judge ruled that the company was culpable for the harm caused by their product."
Synonyms: accountable; answerable; blameworthy; censurable; errant; guilty
Opposite Meaning: innocent

derogatory (adjective) /dɪˈrɒɡət(ə)ri/
Definition: Showing a critical or disrespectful attitude of a person or thing.
Example Sentence: "The politician was accused of making derogatory remarks about the opposition party."
Synonyms: belittling; contemptuous; defamatory; degrading; denigrating; detracting
Opposite Meaning: respectful

disposition (noun) /dɪspəˈzɪʃ(ə)n/
Definition: A person's natural attitude or tendency towards a particular thing, activity, or behavior.
Example Sentence: "The employee's cheerful disposition made them a joy to work with."
Synonyms: attitude; character; demeanor; inclination; mindset; mood
Opposite Meaning: aversion

disreputable (adjective) /dɪsˈrɛpjʊtəbl/
Definition: Considered to be lacking in respectability, honor, or moral integrity.
Example Sentence: "The disreputable company was known for its shady business practices."
Synonyms: contemptible; discreditable; disgraceful; dishonorable; dubious; ignoble
Opposite Meaning: reputable

dogmatic (adjective) /dɒɡˈmatɪk/
Definition: Strict adherence to a set of beliefs or doctrines, often without considering other possibilities or alternatives.
Example Sentence: "The dogmatic teacher would not allow any deviation from the curriculum."
Synonyms: arrogant; authoritarian; bullheaded; doctrinaire; dogged; domineering
Opposite Meaning: open-minded

effeminate (adjective) /iˈfɛmɪnət/
Definition: Displaying characteristics or behavior traditionally associated with women, such as being delicate, sensitive, or refined.
Example Sentence: "The boy was teased for his effeminate interests in dolls and fashion."
Synonyms: dainty; delicate; feminine; girlish; ladylike; sissy
Opposite Meaning: masculine

effrontery (noun) /ɪˈfrʌnt(ə)ri/
Definition: Extreme boldness or impudence, particularly when directed towards someone in a position of authority.
Example Sentence: "The young man's effrontery in talking back to his boss was surprising."
Synonyms: arrogance; audacity; brazenness; cheek; gall; insolence
Opposite Meaning: deference

entitled (adjective) /ɪnˈtʌɪtld/
Definition: Believing oneself to have a right or a privilege to something, often without having earned it.
Example Sentence: "They felt entitled to a refund after the poor service."
Synonyms: allowed; approved; authorized; empowered; enabled; permitted
Opposite Meaning: unentitled

flutter (verb) /ˈflʌtə/
Definition: To rapidly move in quick a delicate, quivering, or flapping motion, typically characterized by quick and gentle variations in direction or intensity.
Example Sentence: "My heart started to flutter as I walked up onto the stage."
Synonyms: flicker; fluctuate; palpitate; quiver; ripple; ruffle
Opposite Meaning: still

frisky (adjective) /ˈfrɪs ki/
Definition: Lively, playful, and energetic quality in someone or something.
Example Sentence: "A frisky squirrel darted up and down the trees, as if challenging me to a race."
Synonyms: animated; buoyant; effervescent; energetic; jaunty; lively
Opposite Meaning: lethargic

gallant (adjective) /ˈɡalənt/
Definition: Having or showing courage, bravery, and chivalry, especially in the face of danger or adversity.
Example Sentence: "The gallant knight rescued the damsel in distress from the tower."
Synonyms: bold; courteous; daring; fearless; gracious; heroic
Opposite Meaning: cowardly

genteel (adjective) /dʒɛnˈtiːl/
Definition: Describing a refined and polite manner or social behavior that adheres to traditional norms and customs.
Example Sentence: "The genteel guests were known for their impeccable manners and refined taste."
Synonyms: civilized; courteous; courtly; cultured; decorous; polite
Opposite Meaning: coarse

glutton (noun) /ˈɡlʌtn/
Definition: A person who eats and drinks excessively and has little self-control when it comes to food.
Example Sentence: "The glutton devoured the entire pizza by himself."
Synonyms: feaster; gannet; gobbler; gorger; gourmand; guzzler
Opposite Meaning: abstainer

habitual (adjective) /həˈbɪtʃʊəl/
Definition: Done or occurring regularly, repeatedly, or as a matter of habit.
Example Sentence: "Her habitual lateness was starting to cause problems at work."
Synonyms: accustomed; fixed; inveterate; natural; normal; regular
Opposite Meaning: sporadic

henchman (noun) /ˈhɛn(t)ʃmən/
Definition: A trusted supporter or ally of a powerful or influential person, especially one who is willing to carry out the more unsavory tasks or assignments.
Example Sentence: "The evil villain had a henchman who did all of his dirty work."
Synonyms: acolyte; associate; attendant; bodyguard; follower; lackey
Opposite Meaning: rival

inconsiderate (adjective) /ˌɪnkənˈsɪd(ə)rət/
Definition: Thoughtless or lacking in consideration for others.
Example Sentence: "His inconsiderate behavior at the movie theater disrupted everyone's enjoyment."
Synonyms: discourteous; disrespectful; impolite; indelicate; insensitive; rude
Opposite Meaning: considerate

indecent (adjective) /ɪnˈdi sənt/
Definition: Offensive, inappropriate, or morally offensive, typically in terms of behavior, language, or appearance.
Example Sentence: "The television show was criticized for its indecent language and explicit content."
Synonyms: disgraceful; immoral; improper; indecorous; lewd; obscene
Opposite Meaning: decent

indignant (adjective) /ɪnˈdɪɡnənt/
Definition: Anger or resentment towards something that is perceived as unjust or unfair.
Example Sentence: "He was indignant at the lack of support from his friends."
Synonyms: angry; annoyed; cross; disgruntled; enraged; exasperated
Opposite Meaning: pleased

indiscipline (noun) /ɪnˈdɪs ə plɪn/
Definition: A state or characteristic of lacking discipline or self-control.
Example Sentence: "The school faced numerous challenges due to the rising levels of indiscipline among students."
Synonyms: chaos; defiance; disobedience; disorder; insubordination; lawlessness
Opposite Meaning: discipline

infiltrate (verb) /ˈɪnf(ɪ)ltreɪt/
Definition: To gain entry into a group, organization, or place by slowly and secretly working one's way in.
Example Sentence: "The hacker was able to infiltrate the computer system undetected."
Synonyms: access; creep; filter; foist; insert; insinuate
Opposite Meaning: exit

infuriate (verb) /ɪnˈfjʊərɪeɪt/
Definition: To cause someone to experience an overwhelming and often uncontrollable surge of anger, frustration, or exasperation due to a specific event, situation, remark, or action.
Example Sentence: "Any attempt to justify the wrong-doing would only infuriate the victims."
Synonyms: annoy; enrage; exasperate; incense; irritate; madden
Opposite Meaning: please

inimical (adjective) /ɪˈnɪmɪkl/
Definition: Harmful, hostile, or unfavorable to a particular person, group, idea, or situation.
Example Sentence: "Bullying in schools creates an inimical environment for learning."
Synonyms: adverse; antagonistic; damaging; dangerous; deleterious; destructive
Opposite Meaning: beneficial

insolent (adjective) /ˈɪn sə lənt/
Definition: Disrespectful, rude, or contemptuous.
Example Sentence: "The student was reprimanded for his insolent behavior towards the teacher."
Synonyms: audacious; brazen; cheeky; cocky; contemptuous; defiant
Opposite Meaning: respectful

insufferable (adjective) /ɪnˈsʌf(ə)rəbl/
Definition: Extremely difficult to tolerate, bear, or endure due to annoying, irritating, or unbearable qualities.
Example Sentence: "The insufferable noise from the construction made it impossible to concentrate."
Synonyms: aggravating; annoying; distressing; dreadful; exasperating; horrible
Opposite Meaning: tolerable

insurgent (noun) /ɪnˈsəːdʒ(ə)nt/
Definition: A person or group who is actively engaged in a rebellion or resistance against an established government or authority.
Example Sentence: "The insurgent group staged a surprise attack on the government forces."
Synonyms: agitator; dissident; guerrilla; insurrectionist; mutineer; protester
Opposite Meaning: loyalist

intemperate (adjective) /ɪnˈtɛmp(ə)rət/
Definition: Lacking self-control, moderation, or restraint, often characterized by excessive indulgence or immoderate behavior.
Example Sentence: "The intemperate language used in the meeting was unprofessional."
Synonyms: excessive; extravagant; imbalanced; immoderate; immodest; indulgent
Opposite Meaning: moderate

irreverent (adjective) /ɪˈrɛvərənt/
Definition: Showing a lack of respect or reverence towards something that is typically held in high regard.
Example Sentence: "The student's irreverent behavior in class disrupted the lesson."
Synonyms: audacious; blasphemous; cheeky; contemptuous; disrespectful; flippant
Opposite Meaning: respectful

lambast (verb) /læmˈbeɪst/
Definition: To harshly criticize, condemn, or reprimand someone or something.
Example Sentence: "The coach is known to lambast his players for not giving their best in the game."
Synonyms: assail; attack; berate; censure; chastise; condemn
Opposite Meaning: praise

louche (adjective) /luːʃ/
Definition: Morally dubious, disreputable, or characterized by a lack of respectability.
Example Sentence: "The louche nightclub was known for its drugs and illegal activities."
Synonyms: decadent; discreditable; disgraceful; dishonorable; disreputable; dubious
Opposite Meaning: honorable

lunge (verb) /lʌnʤ/
Definition: To make a sudden forward movement or thrust, typically with one's body.
Example Sentence: "The boxer made a sudden lunge toward his opponent, catching him off guard."
Synonyms: bound; charge; dive; jab; leap; plunge
Opposite Meaning: retreat

mannerism (noun) /ˈmanərɪz(ə)m/
Definition: A way of behaving or speaking that is distinctive and characteristic of a particular person or group.
Example Sentence: "The athlete's victory pose had become a well-known mannerism after each win."
Synonyms: characteristic; eccentricity; foible; habit; idiosyncrasy; oddity
Opposite Meaning: spontaneity

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

misconduct (noun) /mɪskɒndʌkt/
Definition: Behavior or actions that deviate from accepted standards, rules, or ethical norms.
Example Sentence: "The company conducted an investigation into allegations of financial misconduct."
Synonyms: breach; delinquency; impropriety; indiscretion; lapse; malfeasance
Opposite Meaning: propriety

obdurate (adjective) /ˈɒbdjʊrət/
Definition: Stubbornly resistant to change, persuasion, or moral influence, often displaying a persistent and unyielding attitude.
Example Sentence: "She was obdurate in her refusal to accept help, insisting on doing everything on her own."
Synonyms: adamant; determined; dogged; firm; fixed; immovable
Opposite Meaning: flexible

objectify (verb) /əbˈdʒɛktɪfʌɪ/
Definition: To treat a person or group of people as if they are objects, rather than as individuals with their own thoughts, feelings, and experiences.
Example Sentence: "The artist aimed to objectify the beauty of the female form in his paintings."
Synonyms: embody; exemplify; externalize; fetishize; illustrate; personify
Opposite Meaning: personify

objurgate (verb) /ˈɒbʤɜːɡeɪt/
Definition: To scold, rebuke, or harshly criticize someone in a severe or vehement manner.
Example Sentence: "He was quick to objurgate his subordinates for the slightest errors."
Synonyms: admonish; berate; castigate; chasten; chastise; reprimand
Opposite Meaning: praise

obstreperous (adjective) /əbˈstrɛp(ə)rəs/
Definition: Noisy, unruly, and difficult to control, typically of a person who is defiant and offers resistance to restraint.
Example Sentence: "The obstreperous teenager was constantly getting into trouble and defying authority."
Synonyms: boisterous; disorderly; disruptive; fractious; noisy; raucous
Opposite Meaning: quiet

opprobrious (adjective) /əˈprəʊbrɪəs/
Definition: Highly scornful, offensive, or expressing strong contempt and disgrace.
Example Sentence: "He was known for his opprobrious behavior towards authority."
Synonyms: abusive; calumnious; contumelious; defamatory; demeaning; derogatory
Opposite Meaning: complimentary

persecute (verb) /ˈpəːsɪkjuːt/
Definition: To subject someone to hostility or ill-treatment, often because of their race, religion, or political beliefs.
Example Sentence: "The regime sought to persecute journalists who reported on their corruption."
Synonyms: beset; bother; harass; harrow; hound; maltreat
Opposite Meaning: support

pompous (adjective) /ˈpɒmpəs/
Definition: Displaying an exaggerated sense of self-importance, grandiosity, or pretentiousness in one's behavior, speech, or mannerisms.
Example Sentence: "He strutted around the office with a pompous air, acting as if he knew everything."
Synonyms: affected; arrogant; bombastic; consequential; egotistical; grandiose
Opposite Meaning: humble

profanity (noun) /prəˈfanɪti/
Definition: Language or behavior that is considered to be vulgar, obscene, or disrespectful.
Example Sentence: "The teacher was shocked by the level of profanity used by the students."
Synonyms: abuse; curse; cuss; expletive; language; obscenity
Opposite Meaning: decorum

prude (noun) /pruːd/
Definition: A person who is overly concerned with modesty, particularly in regards to sexuality or nudity.
Example Sentence: "He's a bit of a prude when it comes to public displays of affection."
Synonyms: conservative; killjoy; moralist; prig; priggish; prim
Opposite Meaning: libertine

reckless (adjective) /ˈrɛk lɪs/
Definition: Characterized by a lack of caution, concern, or regard for the potential consequences of one's actions.
Example Sentence: "Her reckless spending left her buried in debt."
Synonyms: audacious; careless; daring; foolhardy; hasty; heedless
Opposite Meaning: cautious

reclusive (adjective) /rɪkluːsɪv/
Definition: Preferring seclusion and isolation from society or social interactions.
Example Sentence: "The reclusive author seldom made public appearances."
Synonyms: cloistered; hermitic; hermitical; introverted; isolated; loner
Opposite Meaning: social

relentless (adjective) /rɪˈlɛntləs/
Definition: Persistent, unyielding, and characterized by an unwavering determination to achieve a particular goal or continue a course of action, often despite obstacles, challenges, or difficulties.
Example Sentence: "His relentless pursuit of success was admirable."
Synonyms: determined; dogged; implacable; inexorable; persevering; persistent
Opposite Meaning: yielding

renegade (noun) /ˈrɛnɪɡeɪd/
Definition: A person who has abandoned or betrayed their previous allegiance, group, or principles, often to join or support a different and opposing faction or cause.
Example Sentence: "She was a renegade worker and sold company secrets to the competition."
Synonyms: betrayer; defector; deserter; dissident; mutineer; rebel
Opposite Meaning: loyalist

repentant (adjective) /rɪˈpɛn tnt/
Definition: Remorseful or regretful for past actions, behaviors, or choices.
Example Sentence: "The criminal appeared in court with a repentant expression, seeking forgiveness for his crimes."
Synonyms: apologetic; ashamed; atoning; contrite; penitent; reformed
Opposite Meaning: unrepentant

repressed (adjective) /rɪˈprɛst/
Definition: Suppressed or restrained, often due to societal, cultural, or personal factors.
Example Sentence: "His repressed memories from his childhood began resurfacing during therapy."
Synonyms: constrained; controlled; inhibited; muffled; restrained; smothered
Opposite Meaning: expressed

reprimand (noun) /ˈrɛprɪmɑːnd/
Definition: The act of scolding, criticizing or censuring someone for their behavior or actions.
Example Sentence: "The parent gave a reprimand to the child for misbehaving."
Synonyms: admonish; admonition; berating; blame; castigate; censure
Opposite Meaning: praise

ribbing (noun) /ˈrɪbɪŋ/
Definition: Good-natured teasing, banter, or playful mocking among friends or acquaintances.
Example Sentence: "The couple's ribbing towards each other was a sign of their affection."
Synonyms: banter; chaffing; jesting; jiving; joshing; kidding
Opposite Meaning: seriousness

rigid (adjective) /ˈrɪdʒ ɪd/
Definition: Stiff, inflexible, or resistant to change or bending.
Example Sentence: "The rigid metal frame supported the weight of the heavy machinery."
Synonyms: firm; immovable; inflexible; solid; stiff; strict
Opposite Meaning: flexible

roguish (adjective) /ˈroʊ gɪʃ/
Definition: Possessing a charming, mischievous, and often slightly deceitful or rebellious nature.
Example Sentence: "She raised an eyebrow with a roguish smile, hinting that she was up to something mischievous."
Synonyms: adventurous; charming; cunning; deceitful; mischievous; playful
Opposite Meaning: honest

satire (noun) /ˈsatʌɪə/
Definition: The use of humor, irony, exaggeration, or ridicule to criticize and expose human vices or societal issues.
Example Sentence: "The satire in the TV show lampooned the culture of celebrity."
Synonyms: burlesque; lampoon; mockery; parody; pasquinade; raillery
Opposite Meaning: earnestness

scurrilous (adjective) /ˈskʌrɪləs/
Definition: Using or given to vulgar, offensive, or insulting language, often in a sexual or profane manner.
Example Sentence: "The politician made scurrilous accusations about his opponents."
Synonyms: abusive; coarse; defamatory; disrespectful; indecent; lewd
Opposite Meaning: respectful

servitude (noun) /ˈsəːvɪtjuːd/
Definition: A condition in which an individual is bound to work for another person or organization, typically without pay.
Example Sentence: "The slave's servitude lasted for many years before he was finally freed."
Synonyms: bondage; confinement; enslavement; obedience; serfdom; slavery
Opposite Meaning: freedom

snobbish (adjective) /ˈsnɒb ɪʃ/
Definition: Displaying the characteristics or attitudes associated with snobbery.
Example Sentence: "She wore a snobbish expression as she glanced disapprovingly at the other guests' attire."
Synonyms: affected; arrogant; condescending; disdainful; elitist; haughty
Opposite Meaning: egalitarian

stolid (adjective) /ˈstɒlɪd/
Definition: Unemotional, calm, and seemingly unaffected by external events or stimuli.
Example Sentence: "He was known for his stolid demeanor and ability to remain calm under pressure."
Synonyms: apathetic; composed; cool; emotionless; expressionless; impassive
Opposite Meaning: emotional

stooge (noun) /stuːdʒ/
Definition: A person who is used by another to perform menial or unpleasant tasks.
Example Sentence: "He was used as a stooge by the politician to deliver false information."
Synonyms: acolyte; adherent; henchman; lackey; loyalist; minion
Opposite Meaning: leader

suave (adjective) /swɑːv/
Definition: Charming, sophisticated, and polished in one's manner and appearance.
Example Sentence: "The politician gave his usual suave performance for the TV cameras."
Synonyms: affable; civilized; courteous; debonair; graceful; polite
Opposite Meaning: clumsy

sullen (adjective) /ˈsʌlən/
Definition: Appearing gloomy, sulky, or unwilling to engage in cheerful or pleasant interactions.
Example Sentence: "The sullen teenager refused to speak to his parents."
Synonyms: brooding; churlish; dour; glum; grumpy; hostile
Opposite Meaning: cheerful

swagger (noun) /ˈswaɡə/
Definition: A confident and arrogant manner or gait, characterized by bold or self-assured actions and statements.
Example Sentence: "He had a swagger that made him seem like he owned the place."
Synonyms: assurance; boldness; brashness; cockiness; conceit; flair
Opposite Meaning: humility

taboo (noun) /təˈbuː/
Definition: A cultural or social prohibition or ban against a particular behavior or practice.
Example Sentence: "The topic of death is often considered a taboo in many cultures."
Synonyms: censorship; exclusion; forbiddance; forbidden; inappropriate; interdiction
Opposite Meaning: accepted

temperamental (adjective) /ˌtɛmprəˈmɛntl/
Definition: Prone to sudden and unpredictable mood swings, changes of emotions, or behavior.
Example Sentence: "The actress was temperamental and was known to have outbursts on set."
Synonyms: capricious; erratic; impatient; irritable; mercurial; moody
Opposite Meaning: stable

unctuous (adjective) /ˈʌŋ(k)tjʊəs/
Definition: Excessively flattering, insincere, or smug in an attempt to gain favor or manipulate others.
Example Sentence: "The unctuous grin on his face made it clear he was not to be trusted."
Synonyms: fake; greasy; hypocritical; obsequious; oily; phony
Opposite Meaning: genuine

unhinged (adjective) /ʌnˈhɪndʒd/
Definition: Mentally or emotionally unstable, erratic, or disconnected from rational or normal behavior.
Example Sentence: "His unhinged rant at the party made it clear that he needed help."
Synonyms: crazy; delirious; demented; deranged; disturbed; erratic
Opposite Meaning: stable

vainglorious (adjective) /veɪnˈglɔr i əs/
Definition: Excessively proud, boastful, or vain, often to the point of being arrogant or self-centered.
Example Sentence: "The athlete's vainglorious celebration after scoring the goal was unnecessary."
Synonyms: arrogant; boastful; conceited; egotistical; narcissistic; overbearing
Opposite Meaning: modest

virulent (adjective) /ˈvɪrʊl(ə)nt/
Definition: Extremely potent, harmful, or infectious, particularly in the context of diseases, toxins, or hostile ideologies.
Example Sentence: "The virulent strain of the virus spread rapidly and caused widespread panic."
Synonyms: cruel; destructive; hateful; malicious; malignant; nasty
Opposite Meaning: harmless

wanton (adjective) /ˈwɒntən/
Definition: Characterized by or displaying a lack of restraint, control, or moral discipline.
Example Sentence: "The wanton disregard for safety was a cause for concern among the workers."
Synonyms: arbitrary; cruel; deliberate; malicious; needless; senseless
Opposite Meaning: disciplined

wrongdoer (noun) /ˈrɔŋˌdu ər/
Definition: An individual who engages in behavior or actions that are considered morally or legally unacceptable.
Example Sentence: "The whistleblower exposed the wrongdoer's unethical practices within the company."
Synonyms: criminal; culprit; delinquent; evildoer; lawbreaker; malefactor
Opposite Meaning: law-abider