Insomnia
/ɪnˈsɒm.ni.ə/
Synonyms
- restlessness
- lack of sleep
- sleeplessness
- wakefulness
Slang Meanings
Night owl
I'm such a night owl; I seem to be fighting insomnia every night.
Sleepless soldier
After all that studying, I turned into a sleepless soldier on exam day.