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Definition of unsleeping
unsleeping
/ʌnˈsliː.pɪŋ/
un · sleep · ing
Adverb:unsleepingly
unsleeping Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Rare
Syllables
3
unsleeping Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Constantly watchful, alert, or active without rest; never ceasing vigilance.
Example
"The lighthouse stood on the rocky promontory like an unsleeping guardian over the stormy harbor."
2
Awake; not asleep or unable to sleep.
Example
"He lay in the dark room for hours, staring at the ceiling with unsleeping eyes."
Synonyms
View all synonyms for unsleeping Antonyms
View all antonyms for unsleeping• Rhymes for unsleeping
Word Origin & Etymology
Formed in Middle English from the negative prefix un- combined with sleeping, the present participle of the Old English verb slæpan.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Unsleeping. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/unsleeping