I dumbly mentioned it and it was obviously done in a joking manner, but everyone was like, “So, did you collect on the bet?”
She looked away, staring steadily, dumbly, at something that she saw.
dumbly she caught her breath, waiting for the bawling out she'd earned.
dumbly, he was conscious of the truth of Judy's words,—that the book was no longer his.
The old man, leathery-faced, with a fine yellow moustache, looked at him dumbly.
Her feet were nearly frozen but she gathered them under her skirt and dumbly waited.
She started for the door while the girls watched her dumbly, not knowing what to do or say.
She became conscious that she had been sitting there dumbly for many minutes; she roused herself with an effort.
He stared wide-eyed at Mr. Perkins, questioning him dumbly, pathetically.
Sometimes she rose out of restlessness, and moved about the room, and the dog's eyes would follow her, dumbly dependent.
Old English dumb "silent, unable to speak," from PIE *dheubh- "confusion, stupefaction, dizziness," from root *dheu- (1) "dust, mist, vapor, smoke," and related notions of "defective perception or wits."
The Old English, Old Saxon (dumb), Gothic (dumbs), and Old Norse (dumbr) forms of the word meant only "mute, speechless;" in Old High German (thumb) it meant both this and "stupid," and in Modern German this latter became the only sense. Meaning "foolish, ignorant" was occasionally in Middle English, but modern use (1823) comes from influence of German dumm. Related: dumber; dumbest.
Applied to silent contrivances, hence dumbwaiter. As a verb, in late Old English, "to become mute;" c.1600, "to make mute." To dumb (something) down is from 1933.
from natural infirmity (Ex. 4:11); not knowing what to say (Prov. 31:8); unwillingness to speak (Ps. 39:9; Lev. 10:3). Christ repeatedly restored the dumb (Matt. 9:32, 33; Luke 11:14; Matt. 12:22) to the use of speech.