chump
noun
°(US slang) the opposite of a champ; a loser.
"Don't be such a chump."
°the smaller of two bullies.
"I'll take on that chump, and you fight the other one."
synonyms: loser, spoilsport, wimp, toady more» , blockhead, idiot, dope, dolt, dunce, dummy, gull, sucker, dupe, sap, pushover, patsy, mark, pigeon, fool