Treasonous

Synonyms for "treasonous" (60 found)

Ranked by relevance and common usage.

Closest matches (12)

apostate

Adjective(10 words)

booky dastardly disleal disloyal double-crossing double-dealing double-faced double-hearted doublehearted faithless

Adjective(1 words)

faithless

Strong matches (18)

Adjective(16 words)

false false-hearted falseheart guiled guileful hollow-hearted illoyal infidelitous insidious judaslike judasly nonfaithful perfidious proditorious proditory punic

fifth column quisling

Related words (30)

Adjective(22 words)

ratlike recreant renegade reptilian reptitious seditious swike traitorish traitorlike traitorly traitorous traitorsome treacherous treachersome trothless unfaithful unleal unloyal unsteadfast untrue

Show 2 more words

viperish viperous

subversive traitorous treacherous treasonable turncoat

Adjective(3 words)

traitorous treasonable unfaithful

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

5 relation types

Synonyms

3 entries

traitorous treacherous treasonable

derived

3 entries

nontreasonous treasonously untreasonous

derived from

1 entries

treason

related to

1 entries

treason

similar

1 entries

disloyal

Sample sentences

2 total sentences available.

Tatoeba + Wiktionary

You'll all hang for this, you ungrateful, treasonous bastards!

Source: tatoeba (6033873)

His treasonous actions earned Benedict Arnold eternal scorn.

Source: wiktionary

More for "treasonous"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.