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Definitions

deceitful

[dih-seet-fuhl] / dɪˈsit fəl /
ADJECTIVE
dishonest, insincere
Synonyms
STRONGEST
artful deceptive disingenuous duplicitous false fraudulent hypocritical misleading underhanded untrustworthy untruthful
WEAK
astucious astute beguiling clandestine counterfeit crafty cunning deceiving delusive delusory designing double-dealing fallacious feline foxy furtive guileful illusory impostrous indirect insidious knavish lying mendacious rascal roguish shifty slick sly sneaky stealthy subtle treacherous tricky two-faced underhand wily
Antonyms
STRONGEST
actual authentic forthright frank genuine honest ingenuous just naive open real reliable sincere truthful upright valid
WEAK
faithful loyal trustworthy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Martin, a respected doctor, is charming, as handsome as “an Italian movie star” and sociopathically deceitful.

From The Wall Street Journal • Mar. 26, 2026

And it’s gone along on the same trajectory with deceitful disclosures.

From Slate • Feb. 4, 2026

Mr Wrench described the hidden commissions as "deceitful" and said firms should be more up front about the payments.

From BBC • Aug. 5, 2025

Vampires in movies, deceitful husbands in plays, corrupt elected officials in office — their survival depends on the masses not knowing the truth.

From Los Angeles Times • Apr. 26, 2025

I looked away for a second to give my deceitful eyes a chance to stop their trickery, to see what had to be there.

From "The Evolution of Calpurnia Tate" by Jacqueline Kelly

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.