Top definition
to put down or undermine someone or their efforts, the opposite of "pump up"

also, to psych out somebody in a negative way
chump down:

"to hell with what they say man....don't ever let anyone chump you down, I know you can pull this off!"

"look man, I know I can chump this guy down...just give me a shot, I know I can get him to fess up!"

by bonzai May 02, 2007
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