sleeplessadjective [ before noun ]
uk/ˈsliːp.ləs/us/ˈsliːp.ləs/C1 without any sleep:
I've spent so many sleepless nights worrying about him.
[ after verb ] not able to sleep:
Alone and sleepless, she stared miserably up at the ceiling.
Thesaurus: synonyms and related words
Animal physiology: not sleeping & not unconscious
- awoke
- be in the land of the living idiom
- come round
- conscious
- consciousness
- insomniac
- keep sb up
- knock
- land
- morning person
- not sleep a wink idiom
- rise and shine! idiom
- sit up
- stay
- stir
- toss
- wait up
- wake (sb) up
- waking
- woken
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sleeplessness
noun [ U ] uk/ˈsliːp.ləs.nəs/us/ˈsliːp.ləs.nəs/