Unable to hear.
Post- Vocational Deafness:
what are the cause of partial deafness
Connexin 26 - Genetic Cause of Hearing Loss and Deafness
Deafness is when somone is unable to hear anything.
Anacusis is the medical term meaning complete deafness.
Inborn Deafness is a trouble speaking or general fusion
deafness, trouble speaking, general confusion
His despair was deafness
temporary deafness
Post lingual deafness is a deafness when hearing loss is adventitious and develops due to disease or after the acquisition of speech and normally occurs after the age of six.Post Lingual is more common than Prelingual deafness.
The term "a spell of deafness" can mean a period of temporary hearing loss. A "spell of deafness" would mean casting a spell to make someone deaf. The "spelling of deafness" is correct in the question (loss of hearing).