noun
Freq #15348
Meanings
-
1
noun
persistent difficulty falling asleep, staying asleep, or obtaining restorative sleep
Weeks of insomnia left her exhausted during the day.
Thesaurus
Synonyms
Opposites
sound sleep
Word family
Derived forms
insomniac
Etymology
Borrowed from Latin insomnia, 'sleeplessness,' formed from in-, 'not or without,' and somnus, 'sleep,' plus the noun suffix -ia.