chump

noun

1. (colloquial, derogatory)An incompetent person, a blockhead; a loser.

   “That chump wouldn't know his ass from a hole in the ground.”

   “What chumps! Didn’t they realize that all they had to do was interpret the constitutional term “the Legislature” to mean “the people”?”

2. (colloquial, derogatory)A gullible person; a sucker; someone easily taken advantage of; someone lacking common sense.

   “It shouldn't be hard to put one over on that chump.”

   “Ralph Wiggum is generally employed as a bottomless fount of glorious non sequiturs, but in “I Love Lisa” he stands in for every oblivious chump who ever deluded himself into thinking that with persistence, determination, and a pure heart he can win the girl of his dreams.”

3. The thick end, especially of a piece of wood or of a joint of meat.

   “Shaped as if they had been unskilfully cut off the chump-end of something.”

4. (UK, obsolete, slang)A person's head or face.

verb

1. (slang, transitive)To treat (someone) as a chump; to defraud or swindle (someone).
2. (alt-of, dated)Dated form of chomp.

   “At a neighbouring table two Germans were making a hearty meal, chumping the meat and smacking their lips in a kind of heavy ecstasy.”