wakefulness

wake-ful-ness · noun

imported

Definitions

noun

  1. 1.

    The state of being unable to sleep; the condition of remaining awake.

  2. 2.

    The state of being alert and vigilant.

Related words

Antonyms: drowsiness, sleepiness, unconsciousness
See also: alertness, awake, insomnia, wake
Synonyms: alertness, consciousness, vigilance

Etymology

From wakeful with the suffix -ness, where wakeful is from wake plus -ful.