# tiredness

/ˈtaɪɝdnɪs/ (US) · /tˈaɪədnəs/ (UK) · CEFR B1 · Noun

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

## Definition

the feeling of being physically or mentally worn out. You feel this when you have worked hard or stayed up too late.

For teachers: a state of physical or mental exhaustion resulting from prolonged activity or lack of rest.

## Examples

- The long drive made me feel a lot of tiredness.
- After working two extra shifts this week, she felt a deep sense of tiredness that wouldn't go away.
- The athlete's performance began to suffer as the tiredness from the previous season's rigorous training schedule finally caught up with him.

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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.