deafness
n. B2 Upper Intermediate US //ˈdɛfnəs// UK //dˈɛfnəs// deaf·ness
n. the loss of hearing, either in one ear or both. It can be a permanent condition or it can happen suddenly.
n. the state of being unable to hear, either partially or completely. Often used to describe a permanent or long-term condition rather than a temporary state.
The doctor checked for any signs of hearing loss or deafness.
Sudden deafness can be caused by a viral infection or a physical injury to the inner ear.
While some forms of deafness are congenital, others develop later in life due to prolonged exposure to loud noises or certain medical conditions.
From Middle English deefnesse; equivalent to deaf + -ness.