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treasonous Synonyms
Another word for treasonous
Choosing another word for treasonous that fits your sentence is easier when synonyms and similar words are paired with an exact adjective definition and ranked by match strength.
• adjective (Context 1)
Involving, constituting, or guilty of the crime of betraying one's country or sovereign.
Usage Example
"The historical tribunal examined letters that revealed a traitorous plot to overthrow the monarchy."
Strongest
traitorous
treasonable
treacherous
Strong
seditious
disloyal
subversive
perfidious
insurgent
mutinous
Weak
unfaithful
Opposites of treasonous
The opposite of treasonous shifts depending on context. Common opposites include:
loyal
patriotic
allegiant
faithful
staunch
devoted
steadfast
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Treasonous. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/treasonous