Pronunciation: (def), [key]
—adj., -er, -est,
1. partially or wholly lacking or deprived of the sense of hearing; unable to hear.
2. refusing to listen, heed, or be persuaded; unreasonable or unyielding: deaf to all advice.
(used with a pl. v.) deaf persons collectively (usually prec. by the).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.