Her duplicitous nature made trusting her relationships very difficult.
Synonyms for duplicitous
deceitful
treacherous
dishonest
Antonyms for duplicitous
honest
sincere
genuine
Practice duplicitous on real SAT questions
Vocabulary like duplicitous 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.