# unconsciousness

/ˌənˈkɑnʃəsnɪs/ (US) · /ʌnkˈɒnʃəsnəs/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/unconsciousness
Updated: 2026-10-13

## Definition

a state where you are not awake and do not know what is happening around you. This usually happens because of an injury, an illness, or a medical drug.

For teachers: a state of being unaware and unresponsive to external stimuli, typically resulting from physical trauma, illness, or anaesthesia. Often contrasted with sleep, as the subject cannot be easily roused.

## Examples

- The boxer fell into unconsciousness after the final blow.
- Paramedics monitored the patient's breathing closely as he drifted in and out of unconsciousness following the accident.
- The prolonged period of unconsciousness raised concerns among the neurological team regarding potential long-term cognitive impairment or structural brain damage.

## Synonyms

blackout, coma, stupor

## Antonyms

consciousness, awareness, wakefulness

## Usage notes

- Often follows the verbs 'drift into', 'lapse into', or 'lose'.

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