dumber
adj.adj. less intelligent or more foolish than someone or something else. It is the comparative form of 'dumb'.
adj. the comparative form of 'dumb', indicating a lower level of intelligence or a greater degree of foolishness. Often used informally to describe poor decision-making.
That was a dumber mistake than the last one.
He felt dumber after trying to explain the simple instructions to a group that clearly already understood them.
The sequel was criticized for being significantly dumber than the original film, relying on cheap physical gags rather than the clever wordplay that made the first one a success.
Comparative form of the adjective 'dumb'; typically follows a linking verb or precedes a noun.
more dumberdumberDumber is already a comparative form; adding 'more' is a double comparative error.