What is another word for "sucker"?

Roget's Thesaurus (1911) lists these synonyms for "sucker": bait, bite, catch, credulous, cull, cully, dupe, error, fall, flat, fool, gobemouche, greenhorn, gudgeon, gull, into, jay, laughingstock, mistaken, nibble, paw, pigeon, puppet, simple, swallow, the, trap, victim.