Unable to speak; lacking power of speech (kept in "deaf, dumb, and blind"). Example: His younger brother was born dumb, and communicated with sign language.
Silent; unaccompanied by words. Example: dumb show
(especially of a person) Extremely stupid. Example: You are so dumb! You don't even know how to make toast!
Pointless, foolish, lacking intellectual content or value. Example: Brendan had the dumb job of moving boxes from one conveyor belt to another.
Lacking brightness or clearness, as a colour.
All clues having "DUMB"
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