# deafness

/ˈdɛfnəs/ (US) · /dˈɛfnəs/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/deafness
Updated: 2026-05-19

## Definition

the loss of hearing, either in one ear or both. It can be a permanent condition or it can happen suddenly.

For teachers: 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.

## Examples

- 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.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.