Part of Speech: adjective
Definition: naive, trusting
Synonyms: being a sucker, believing, biting, credulous, easily taken in, easy mark, falling hook line and sinker, foolish, green*, innocent, kidding oneself, mark*, silly, simple, sucker , susceptible, swallowing whole, taken in, taking the bait, trustful, tumbling for, unskeptical, unsophisticated, unsuspecting, wide-eyed