Synonyms of treasonous
47 similar words
Another word for treasonous is traitorish. Other synonyms of treasonous are double-dealing, double-crossing, double-hearted, false-hearted and disloyal.
Synonyms and similar words for treasonous
adjectiveLike or in the way of treason.
- dastardly
- perfidiousOf, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.
- traitorous
- booky
- disloyalNot loyal, without loyalty.
- double-crossingWhich double-crosses.
- double-dealingCheating, dishonest; treacherous.
- double-faced
- double-heartedTreacherous.
- doubleheartedDeceitful; treacherous; double-crossing.
- faithless
- false
- false-heartedDisloyal, perfidious.
- guilefulFull of guile; treacherously deceptive.
- hollow-hearted
- infidelitousUnfaithful.
- JudaslikeResembling or characteristic of Judas Iscariot; traitorous.
- JudaslyJudaslike; traitorous.
- nonfaithfulNot faithful.
- Punic figuratively
- ratlikeResembling or characteristic of a rat, whether physically or (in behavioral terms) cunning, disloyal, or cowardly.
- recreant literary, poetic
- renegade
- reptilian figuratively
- traitorishTraitorly; treasonous.
- traitorlikeTraitorly.
- traitorlyLike a traitor; traitorous.
- traitorsomeCharacteristic of a traitor; traitorous.
- treacherous
- treachersomeCharacterised or marked by treachery; treacherous.
- unfaithful
- unlealDisloyal.
- unloyalNot loyal.
- unsteadfastNot steadfast; wavering, unfaithful.
- untrue
- viperish
- viperous
- disleal obsoleteDisloyal; perfidious.
- falseheart obsoleteSynonym of false-hearted.
- guiled archaicArmed with deceit; treacherous.
- illoyal obsoleteDisloyal.
- insidious nonstandard
- proditorious obsoleteTreacherous, traitorous.
- proditory obsoleteTreacherous, traitorous.
- reptitious figuratively, obsolete
- swike dialectal, obsoleteDeceitful; treacherous.
- trothless archaic, poeticUntrustworthy, treacherous.
Meaning of treasonous
- adjective Like or in the way of treason.
Questions about synonyms of treasonous
- What is another word for treasonous?
- Treasonous has 47 synonyms on Word.ws, such as traitorish, double-dealing, double-crossing, double-hearted, false-hearted, disloyal, perfidious and false.
- What does treasonous mean?
- Treasonous means like or in the way of treason.
Source and license
Adapted from Wiktionary: treasonous (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 treasonous.” Word.ws, https://word.ws/synonyms/treasonous. Based on Wiktionary, CC BY-SA 4.0.