We found 42 dictionaries that define the word instinct:

General (28 matching dictionaries)

1. instinct: Merriam-Webster
2. instinct: Oxford Learner's Dictionaries
3. instinct: American Heritage Dictionary of the English Language
4. instinct: Collins English Dictionary
5. instinct: Vocabulary.com
6. Instinct, instinct: Wordnik
7. instinct: Cambridge Advanced Learner's Dictionary
8. instinct: Wiktionary
9. instinct: Webster's New World College Dictionary, 4th Ed.
10. instinct: The Wordsmyth English Dictionary-Thesaurus
11. instinct: Infoplease Dictionary
12. instinct: Dictionary.com
13. instinct: Online Etymology Dictionary
14. instinct: Cambridge Essential American English Dictionary
15. Instinct (American TV series), Instinct (As Blood Runs Black album), Instinct (Ektomorf album), Instinct (Hong Kong TV series), Instinct (Iggy Pop album), Instinct (Kavana album), Instinct (Niki and the Dove album), Instinct (Stargate Atlantis), Instinct (TV serial), Instinct (TV series), Instinct (U.S. TV series), Instinct (disambiguation), Instinct (magazine), Instinct (movie), Instinct (song), Instinct, The Instinct: Wikipedia, the Free Encyclopedia
16. Instinct: Online Plain Text English Dictionary
17. instinct: Webster's Revised Unabridged, 1913 Edition
18. instinct: Rhymezone
19. instinct, instinct (het), instinct (m): AllWords.com Multi-Lingual Dictionary
20. instinct: Webster's 1828 Dictionary
21. Instinct: Dictionary of Phrase and Fable (1898)
22. instinct: FreeDictionary.org
23. instinct: Mnemonic Dictionary
24. instinct: Wikimedia Commons US English Pronunciations
25. instinct: TheFreeDictionary.com
26. instinct: Longman Dictionary of Contemporary English

Business (2 matching dictionaries)

27. instinct: Financial dictionary
28. instinct: Legal dictionary

Computing (1 matching dictionary)

29. instinct: Encyclopedia

Medicine (6 matching dictionaries)

30. instinct: Merriam-Webster Medical Dictionary
31. Dorland's Illustrated Medical Dictionary (No longer online)
32. Medical Dictionary (No longer online)
33. online medical dictionary (No longer online)
34. Terms in the field of Psychiatry and Neurology (No longer online)
35. instinct: Medical dictionary

Miscellaneous (1 matching dictionary)

36. instinct: Idioms

Religion (1 matching dictionary)

37. Instinct: Catholic Encyclopedia

Science (2 matching dictionaries)

38. Bird On! (No longer online)
39. Anthropology dictionary (No longer online)

Slang (1 matching dictionary)

40. instinct: Urban Dictionary

(Note: See instincts as well.)

Definitions from Wiktionary ( ) ▸ noun:  A natural or inherent impulse or behaviour. ▸ noun:  An intuitive reaction not based on rational conscious thought. ▸ adjective:  (archaic) Imbued, charged (with something). Similar: full, imbue, inherent aptitude, gut feeling, animus, instinctualization, second nature, impetus, intuition, pulsion, more... Opposite: reason, logic, analysis, thought, deliberation Types: fight or flight, maternal, territorial, migratory, feeding, grooming, reproductive, social, more... Phrases: death instinct, sexual instinct, maternal instinct, survival instinct, herd instinct, more... Adjectives: natural, sexual, first, maternal, social, human, religious, unerring, true, strong, dramatic Colors:     crimson,     indigo,     charcoal,     emerald,     amber, more... ▸ Word origin ▸ Words similar to instinct ▸ Usage examples for instinct ▸ Idioms related to instinct ▸ Wikipedia articles (New!) ▸ Popular adjectives describing instinct ▸ Popular nouns described by instinct ▸ Words that often appear near instinct ▸ Rhymes of instinct ▸ Invented words related to instinct