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We found 26 dictionaries with English definitions that include the word insomniac:
Click on the first link on a line below to go directly to a page where "insomniac" is defined.

General dictionaries General (23 matching dictionaries)
  1. insomniac: Oxford Dictionaries [home, info]
  2. insomniac: American Heritage Dictionary of the English Language [home, info]
  3. insomniac: Collins English Dictionary [home, info]
  4. insomniac: Vocabulary.com [home, info]
  5. insomniac: Macmillan Dictionary [home, info]
  6. insomniac: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
  7. Insomniac, insomniac: Wordnik [home, info]
  8. insomniac: Cambridge Advanced Learner's Dictionary [home, info]
  9. insomniac: Wiktionary [home, info]
  10. insomniac: The Wordsmyth English Dictionary-Thesaurus [home, info]
  11. insomniac: Infoplease Dictionary [home, info]
  12. insomniac: Dictionary.com [home, info]
  13. insomniac: UltraLingua English Dictionary [home, info]
  14. Insomniac (album), Insomniac (health), Insomniac (song), Insomniac, The Insomniac: Wikipedia, the Free Encyclopedia [home, info]
  15. insomniac: Rhymezone [home, info]
  16. insomniac: Free Dictionary [home, info]
  17. insomniac: Mnemonic Dictionary [home, info]
  18. insomniac: WordNet 1.7 Vocabulary Helper [home, info]
  19. insomniac: LookWAYup Translating Dictionary/Thesaurus [home, info]
  20. insomniac: Dictionary/thesaurus [home, info]
  21. insomniac: Wikimedia Commons US English Pronunciations [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. Insomniac (health), insomniac: Encyclopedia [home, info]

Medicine dictionaries Medicine (2 matching dictionaries)
  1. insomniac: online medical dictionary [home, info]
  2. Insomniac (health), insomniac: Medical dictionary [home, info]

(Note: See insomnia for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (insomniac)

noun:  someone who cannot sleep
adjective:  experiencing or accompanied by sleeplessness ("Insomniac old people")

▸ Also see insomnia

Popular adjectives describing insomniac

Popular nouns described by insomniac

Words similar to insomniac:   insomnia, sleepless, watchful, sleepless person, more...

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