2. Unwilling to hear or listen; determinedly inattentive; regardless; not to be persuaded as to facts, argument, or exhortation; with to; as, deaf to reason. O, that men's ears should be to counsel deaf, but not to flattery! (Shak)
5. Decayed; tasteless; dead; as, a deaf nut; deaf corn. If the season be unkindly and intemperate, they [peppers] will catch a blast; and then the seeds will be deaf, void, light, and naught. (Holland) deaf and dumb, without the sense of hearing or the faculty of speech. See deaf-mute.
Origin: oe. Def, deaf, deef, as. Deaf; akin to D. Doof, g. Taub, Icel. Daufr, dan. Dov, Sw. Dof, goth. Daubs, and prob. To E. Dumb (the original sense being, dull as applied to one of the senses), and perh. To gr. (for) blind, smoke, vapor, folly, and to g. Toben to rage. Cf. Dumb.