SAT GRE credulous Definition Too ready to believe things; gullible. Example "He was too credulous, believing every rumor he heard." Sign in to save SAT PDF — $25 GRE PDF — $25 ← creditor creed → Study tips featuring "credulous" Write GRE Words Into Your Own Sentences How Context Clues Save You on the SAT Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal