Synonyms & related words for perfidious

Find synonyms, related words, and the definition of perfidious — including treacherous, traitorous, deceitful, duplicitous, treasonous, treasonable. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to perfidious

Explore words related to perfidious — words associated with it, words that go with it, and its nearest matches in meaning. Related words include perfidiously, treacherousness, perfidy, recreancy, dastardly, duplicitousness, devious, traitorously. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for perfidious

Common synonyms for perfidious include treacherous, traitorous, deceitful, duplicitous, treasonous, treasonable, disloyal, recreant — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does perfidious come from?

The word perfidious breaks down into 2 roots of Latin origin: per-, from Latin per (“through, betraying”); and -fid, from Latin fides (“faith, trust”). Explore each root to see other English words built from the same source.