(dated) To silence. / (transitive) To make stupid. / (transitive) To represent as stupid. / (transitive) To reduce the intellectual demands of.

(dated) Unable to speak; lacking power of speech (kept in "deaf, dumb, and blind"). / (dated) Silent; unaccompanied by words. / (informal, derogatory, especially of a person) Extremely stupid.

simple past tense and past participle of dumb

Third-person singular simple present indicative form of dumb

present participle of dumb

(dated) The state of being mute: that is, of not communicating vocally, whether from selective mutism (refusal to speak) or from an inability to speak.

plural of dumbness

(rare, slang, derogatory) Extremely stupid.

(nautical) The hull of a barge, in tow of a tug, used for the carriage of cargo

(slang, US) A stupid person.