His mendacious testimony was exposed by the prosecution.
Synonyms for mendacious
dishonest
false
lying
Antonyms for mendacious
truthful
honest
sincere
Practice mendacious on real SAT questions
Vocabulary like mendacious appears on the Digital SAT in Words-in-Context questions, where you choose the word that fits a passage's meaning and tone. You can also drill this word with vocabulary flashcards.