We found 31 dictionaries that define the word Optimist:

General (23 matching dictionaries)

1. optimist: Longman Dictionary of Contemporary English
2. Optimist, optimist: Merriam-Webster
3. optimist: Oxford Learner's Dictionaries
4. optimist: American Heritage Dictionary of the English Language
5. optimist: Collins English Dictionary
6. optimist: Vocabulary.com
7. Optimist, optimist: Wordnik
8. optimist: Cambridge Advanced Learner's Dictionary
9. Optimist, optimist: Wiktionary
10. optimist: The Wordsmyth English Dictionary-Thesaurus
11. optimist: Infoplease Dictionary
12. Optimist, optimist: Dictionary.com
13. optimist: Cambridge Essential American English Dictionary
14. Optimist (dinghy), Optimist, The Optimist (Anathema album), The Optimist (DD Smash album), The Optimist (New Young Pony Club album), The Optimist (TV series): Wikipedia, the Free Encyclopedia
15. Optimist: Online Plain Text English Dictionary
16. optimist: Webster's Revised Unabridged, 1913 Edition
17. optimist: Rhymezone
18. Optimist (m), optimist: AllWords.com Multi-Lingual Dictionary
19. optimist: FreeDictionary.org
20. optimist: Mnemonic Dictionary
21. optimist: TheFreeDictionary.com

Business (2 matching dictionaries)

22. MoneyGlossary.com (No longer online)
23. optimist: Legal dictionary

Computing (1 matching dictionary)

24. optimist: Encyclopedia

Medicine (3 matching dictionaries)

25. optimist: Merriam-Webster Medical Dictionary
26. online medical dictionary (No longer online)
27. optimist: Medical dictionary

Miscellaneous (1 matching dictionary)

28. OPTIMIST: Acronym Finder

Slang (1 matching dictionary)

29. optimist: Urban Dictionary

(Note: See optimism as well.)

Definitions from Wiktionary (Optimist) ▸ noun:  A person who expects a favourable outcome. ▸ noun:  A believer in optimism. ▸ noun:  (nautical) A small centreboard sailing dinghy designed to train and introduce young children into sailing. Similar: high hopes, hopeful, result, benefit of the doubt, rose-colored glasses, positivity effect, upside, Pollyanna, rose-coloured spectacles, positive, more... Opposite: pessimist Types: cheery, upbeat, hopeful, confident, pollyanna, more... Phrases: Optimist International, the opposite of an optimist, opposite of optimist, expects like an optimist, more... Adjectives: eternal, incurable, incorrigible, great, inveterate, true, foolish, irrepressible, cockeyed, natural, perennial Colors:     yellow,     orange,     sky blue,     lime green,     coral, more... ▸ Words similar to Optimist ▸ Usage examples for Optimist ▸ Idioms related to Optimist ▸ Wikipedia articles (New!) ▸ Popular adjectives describing Optimist ▸ Words that often appear near Optimist ▸ Rhymes of Optimist ▸ Invented words related to Optimist