Wakefulness

//ˈweɪk.fʊl.nəs// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    The state of being wakeful. countable, uncountable

    "Similarly, the brain-penetrating Hrh2 antagonist zolantidine had no effect on light-induced phase shift as shown for hamsters, or the lengths or distributions of NREM, REM and wakefulness states as shown on rats."

  2. 2
    a periodic state during which you are conscious and aware of the world wordnet
  3. 3
    the process of paying close and continuous attention wordnet
  4. 4
    a temporary state in which you are unable (or unwilling) to sleep wordnet

Synonyms

All synonyms
acuityagilityalertnessarousalattentionawareness

Example

More examples

"Tom's blinks became longer and longer as he entered the twilight zone between wakefulness and sleep."

Etymology

From wakeful + -ness.

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