Synonyms of treacherous
69 similar words · 8 opposite words
Another word for treacherous is double-dealing. Other synonyms of treacherous are double-crossing, double-faced, double-hearted, false-hearted and hollow-hearted. The opposite of treacherous is true.
Synonyms and similar words for treacherous
adjectiveDeceitful; inclined to betray.
- JudaslikeResembling or characteristic of Judas Iscariot; traitorous.
- perfidiousOf, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.
- traitorousCharacteristic of a traitor; disloyal.
- beguilingThat beguiles or beguile.
- deceitful
- deceptiveLikely or attempting to deceive.
- deceptoryDeceptive.
- fallacious
- fraudfulFraudulent.
- fraudulent
- mendacious
- deceptious obsoleteDeceptive, tending to deceive.
adjectiveUnreliable; dangerous.
- hazardous
- perilousDangerous, full of peril.
- unsound
- dangerous
- dangersomeCharacterised or marked by danger; dangerous.
- hot informal
- jeopardousMarked by jeopardy; dangerous or perilous.
- wicked
- forbiddingAppearing to be threatening, unfriendly or potentially unpleasant.
- parlous
- periculousDangerous, hazardous, perilous.
- precarious
- risky
- unsafeNot safe (various senses); dangerous.
adjectiveMore synonyms
- bookyTreacherous, snitchy, not trustworthy.
- dastardlyTreacherous; given to backstabbing.
- disloyalNot loyal, without loyalty.
- double-crossingWhich double-crosses.
- double-dealingCheating, dishonest; treacherous.
- double-facedDeceitful; hypocritical; treacherous.
- double-heartedTreacherous.
- doubleheartedDeceitful; treacherous; double-crossing.
- faithlessNot true to allegiance, duty, or vows.
- falseNot faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous.
- false-heartedDisloyal, perfidious.
- guilefulFull of guile; treacherously deceptive.
- hollow-heartedInsincere; deceitful; treacherous; hypocritical.
- infidelitousUnfaithful.
- JudaslyJudaslike; traitorous.
- nonfaithfulNot faithful.
- Punic figurativelyPerfidious, treacherous, faithless.
- ratlikeResembling or characteristic of a rat, whether physically or (in behavioral terms) cunning, disloyal, or cowardly.
- recreant literary, poeticUnfaithful to someone, or to one's duties or honour; disloyal, false.
- renegadeDeserting, treacherous, disloyal.
- reptilian figurativelyCold-blooded, treacherous, unavoidably selfish and hostile.
- traitorishTraitorly; treasonous.
- traitorlikeTraitorly.
- traitorlyLike a traitor; traitorous.
- traitorsomeCharacteristic of a traitor; traitorous.
- treachersomeCharacterised or marked by treachery; treacherous.
- unfaithfulNot keeping good faith; disloyal; not faithful.
- unlealDisloyal.
- unloyalNot loyal.
- unsteadfastNot steadfast; wavering, unfaithful.
- untrueNot faithful or loyal.
- viperishSpiteful; treacherous.
- viperousVenomous, malicious or treacherous.
- disleal obsoleteDisloyal; perfidious.
- falseheart obsoleteSynonym of false-hearted.
- guiled archaicArmed with deceit; treacherous.
- illoyal obsoleteDisloyal.
- insidious nonstandardTreacherous.
- proditorious obsoleteTreacherous, traitorous.
- proditory obsoleteTreacherous, traitorous.
- reptitious figuratively, obsoleteSynonym of reptilian: reptilelike, (figuratively) cold-blooded, treacherous.
- swike dialectal, obsoleteDeceitful; treacherous.
- trothless archaic, poeticUntrustworthy, treacherous.
Opposite of treacherous
adjectiveExhibiting treachery.
adjectiveMore antonyms
- faithful
- fidelitous
- leal
- steadfast
- true
- untraitorousNot traitorous.
- untreacherousNot treacherous.
Meaning of treacherous
- adjective Exhibiting treachery.
- adjective Deceitful; inclined to betray.
- adjective Unreliable; dangerous.
treacherous in other languages
Questions about synonyms of treacherous
- What is another word for treacherous?
- Treacherous has 69 synonyms on Word.ws, such as double-dealing, double-crossing, double-faced, double-hearted, false-hearted, hollow-hearted, renegade and untrue.
- What is the opposite of treacherous?
- The opposite of treacherous is true.
- What does treacherous mean?
- Treacherous means exhibiting treachery.
Source and license
Adapted from Wiktionary: treacherous (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of treacherous.” Word.ws, https://word.ws/synonyms/treacherous. Based on Wiktionary, CC BY-SA 4.0.