Unsleepy
adj ·Rare ·Advanced level
Definitions
- 1 Not sleepy; wakeful.
"My seemingly endless medical school days of gleelessly skipping lectures and spending far too many hours on crosswords, of obsessive toast eating and long hostile runs after which I’d get into bed unsleepy at 8 p.m. simply hoping to bring the day to a close a little bit earlier — that would all be over soon, for a year at least."
Antonyms
All antonymsExample
More examples"My seemingly endless medical school days of gleelessly skipping lectures and spending far too many hours on crosswords, of obsessive toast eating and long hostile runs after which I’d get into bed unsleepy at 8 p.m. simply hoping to bring the day to a close a little bit earlier — that would all be over soon, for a year at least."
Etymology
From un- + sleepy, perhaps continuing Middle English *unslepy, from Old English unslǣpiġ (“sleepless”). Compare Dutch onslaperig (“unsleepy”), German unschläfrig (“unsleepy”).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.