Synonyms|231Antonyms|67|Broader|2Narrower|0Related|250
1
unabating
1
unblinking
1
unconquerable
1
undaunted
1
undiscouraged
1
undrooping
1
unfailing
1
unfaltering
1
unflagging
1
unflinching
1
unintermitting
1
uninterrupted
1
unnodding
1
unpeaceful(adjective, anxious, unsettled, restless, uneasy)
1
unrelaxing
1
unrelenting
1
unremitting
1
unrestful(adjective, anxious, unsettled, restless, uneasy)
1
unsparing
1
unsteady(anxious, unsettled, restless, uneasy, unruly)
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APASmart Define. (2015). sleepless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sleepless/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleepless thesaurus" https://smartdefine.org/sleepless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, sleepless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sleepless/thesaurus/synonyms>.
MLASmart Define. "sleepless thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/sleepless/thesaurus/synonyms>