unbeliever; someone who habitually doubts accepted beliefs
Skeptic in a sentence
The skeptic questioned every claim without accepting any evidence.
Synonyms for skeptic
doubter
cynic
unbeliever
Antonyms for skeptic
believer
faithful
trusting
Practice skeptic on real SAT questions
Vocabulary like skeptic 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.