Definitions of dumb
The word dumb uses 4 letters:bdmu.
DUMB is playable in:
a. - Destitute of the power of speech; unable; to utter articulate sounds; as, the dumb brutes. 2
a. - Not willing to speak; mute; silent; not speaking; not accompanied by words; as, dumb show. 2
a. - Lacking brightness or clearness, as a color. 2
v. t. - To put to silence. 2