noun ·4 syllables ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The state of lacking consciousness, of being unconscious countable, uncountable

   "I was roused from unconsciousness by the alarm clock."

2. 2
   a state lacking normal awareness of the self or environment wordnet
3. 3
   ignorance or innocence; the state of being uninformed or unaware countable, uncountable

Synonyms

All synonyms

absentmindednessbedtimeblackoutblindnesscarelessnesscatalepsy

Antonyms

All antonyms

awarenessconsciousnessmindfulness

Example

More examples

"Tom slipped back into unconsciousness."

Etymology

From unconscious + -ness or un- + consciousness.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.