perfidious
(per-fid-i-ous)
4 syllables
Definition
adjective. tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans
Example Sentence
We were betrayed by a perfidious ally.
Synonyms
treacherous; betraying; double-crossing
Antonyms
Hear It! Say It! Write It!
perfidious
