June 19, 2026

Perfidious

adjective

Definition

Deceitful and untrustworthy; guilty of betrayal. The word carries a strong moral condemnation of treachery or disloyalty.

Example Sentence

“The perfidious advisor had been leaking state secrets to the enemy for years.”

Etymology

From Latin perfidiosus, from perfidia (treachery), from per- (away) + fides (faith).

Scrabble Score

P3E1R1F4I1D2I1O1U1S1

PERFIDIOUS scores 16 points in Scrabble.

Synonyms & Related Words

treacherous disloyal deceitful traitorous

Use It in Word Games

Find words from PERFIDIOUS Anagram: Perfidious Wordle Solver