What does "deafness" mean?

The condition of being deaf; the lack or loss of the ability to hear.

Deafness

Common synonyms include: blindness, dogmatism, hearing loss, incomprehension, insensibility, mindlessness.

noun

noun ·2 syllables ·Uncommon ·Advanced level

Noun

1
The condition of being deaf; the lack or loss of the ability to hear. countable, uncountable
"Paul wet his lips with his tongue, read: “ ‘Think you of I the fact that a deaf person cannot hear. Then, what deafness may we not all possess? What senses do we lack that we cannot see and cannot hear another world all around us? What is there around us that we cannot—’ ”"
2
partial or complete loss of hearing wordnet
3
Lack of knowledge or refusal to admit a particular problem, issue, etc. countable, figuratively, uncountable
"their deafness to her cries"