apprentice, babe, baby, beginner, boob, catechumen, chump, cinch, credulous person, cull, dabbler, deb, debutant, dilettante, dunce, dupe, easy mark, easy pickings, entrant, fall guy, fish, fledgling, fool, freshman, gobe-mouches, greener, greenhorn, gudgeon, gull, ignoramus, illiterate, illiterati, infant, innocent, know-nothing, leadpipe cinch, learner, lowbrow, middlebrow, monkey, neophyte, nestling, newcomer, no scholar, novice, novitiate, patsy, pigeon, plaything, prize sap, probationer, puddinghead, pushover, raw recruit, recruit, rookie, sap, saphead, schlemiel, sitting duck, stooge, sucker, tenderfoot, toy, trainee, trusting soul, tyro, unintelligentsia, victim