insomniac

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

someone who cannot sleep
• Syn:
sleepless person
• Hypernyms:
sick person, diseased person, sufferer

II - adjective

experiencing or accompanied by sleeplessness
- insomniac old people
- insomniac nights
- lay sleepless all night
- "twenty watchful, weary, tedious nights"- Shakespeare
• Syn:
sleepless, watchful
• Similar to:
awake
• Derivationally related forms:
sleeplessness (for: sleepless)

• Từ đồng nghĩa / Synonyms:
  sleepless, watchful, sleepless person