unhearing (adj.)

• asleep
• deaf
• deaf-mute
• deafened
• earless
• incognizant
• insensible
• mindless
• napping
• stone-deaf
• stunned
• surd
• tone-deaf
• unaware
• unconscious
• unknowing
• unmindful
• unperceiving
• unseeing
• unsuspecting
• unwitting
• witless