a stranger to asleep blind to caught napping dead to deaf deaf and dumb deaf to deaf-eared deaf-mute deafened dull-eared earless hard of hearing impercipient in ignorance of incognizant insensible insensible to mindless napping nonconceiving not with it out of it stone-deaf stunned surd thick of hearing tone-deaf unaware unaware of unconscious unconscious of uninsightful unknowing unmindful unmindful of unperceiving unprehensive unrealizing unseeing unsuspecting unwitting witless word-deaf