Definition of "unhearing"
Not hearing.
Quotations
[She] flung herself / Down on the great King's couch, and writhed upon it, / And clench'd her fingers till they bit the palm, / And shriek'd out 'traitor' to the unhearing wall, […]
1859, Alfred Tennyson, “Elaine”, in Idylls of the King, London: Edward Moxon & Co., […], page 179