shrimp

1 a living thing much smaller than others of its kind the boy was just a shrimp until his teens, when he had a growth spurt Synonyms diminutive, midget, mite, peewee, pygmy (also pigmy), runt, scrub, dwarf, Tom ThumbRelated Words nubbin; mini, miniature; bantam; homunculus, hop-o'-my-thumb, manikin (also mannikin); half-pintNear Antonyms whale, whopperAntonyms behemoth, colossus, giant, jumbo, leviathan, mammoth, monster, titan

2 a person of no importance or influence you have no business telling me what to do, you little shrimp! Synonyms cipher, dwarf, half-pint, insect, insignificancy, lightweight, morsel, nonentity, nothing, nullity, number, pip-squeak, pygmy (also pigmy), nobody, snippersnapper, twerp, whippersnapper, zero, zilchRelated Words no-name, noncelebrity; least; inferior, mediocrity, obscurity; figurehead, puppet; nonpersonNear Antonyms chief, head, lead, leader; celebrity, luminary, notable, personality, planet, star, superstar; authority, superior; great power, party, powerAntonyms big shot, big wheel, bigwig, eminence, figure, kahuna, kingpin, magnate, nabob, personage, somebody, VIP