What is another word for "credulous"?

Roget's Thesaurus (1911) lists these synonyms for "credulous": all, away, bait, believing, bigotry, bite, blind, catch, cheese, childish, conclusion, confident, confiding, credo, credulity, credulousness, cull, cullibility, cully, deceive, deception, delusion, down, dupe, easily, error, fall, father, flat, follow, fool, for, gobemouche, gold, gospel, grasp, green, greenhorn, gross, gudgeon.