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Use "dumber" in a sentence
"What make these clowns look even dumber is they have a copy of the bill and read it before they ask stupid question, and their concern is just not in the bill, they make it up."
"I think the Matthew Yglesias of Shrum and dumber is right."
"It's as if Mr Moore's didn't want his Everyman persona to look or sound too smart, a tactic that results only in dumber movies."