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We found 44 dictionaries with English definitions that include the word optimism:
Click on the first link on a line below to go directly to a page where "optimism" is defined.

General (31 matching dictionaries)

1. optimism: Merriam-Webster.com [home, info]
2. optimism: Oxford Dictionaries [home, info]
3. optimism: American Heritage Dictionary of the English Language [home, info]
4. optimism: Collins English Dictionary [home, info]
5. optimism: Vocabulary.com [home, info]
6. optimism: Macmillan Dictionary [home, info]
7. Optimism, optimism: Wordnik [home, info]
8. optimism: Cambridge Advanced Learner's Dictionary [home, info]
9. optimism: Wiktionary [home, info]
10. optimism: Webster's New World College Dictionary, 4th Ed. [home, info]
11. optimism: V2 Vocabulary Building Dictionary [home, info]
12. optimism: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. optimism: Infoplease Dictionary [home, info]
14. optimism: Dictionary.com [home, info]
15. optimism: Online Etymology Dictionary [home, info]
16. optimism: UltraLingua English Dictionary [home, info]
17. optimism: Cambridge Dictionary of American English [home, info]
18. Optimism: Wikipedia, the Free Encyclopedia [home, info]
19. Optimism: Online Plain Text English Dictionary [home, info]
20. optimism: Webster's Revised Unabridged, 1913 Edition [home, info]
21. optimism: Rhymezone [home, info]
22. optimism: AllWords.com Multi-Lingual Dictionary [home, info]
23. optimism: Webster's 1828 Dictionary [home, info]
24. optimism: Free Dictionary [home, info]
25. optimism: Mnemonic Dictionary [home, info]
26. optimism: WordNet 1.7 Vocabulary Helper [home, info]
27. optimism: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. optimism: Dictionary/thesaurus [home, info]
29. optimism: Wikimedia Commons US English Pronunciations [home, info]

Art (2 matching dictionaries)

30. optimism: Dictionary of Philosophical Terms and Names [home, info]
31. optimism: The Ism Book [home, info]

Business (3 matching dictionaries)

32. OPTIMISM: Accounting Glossary [home, info]
33. optimism: Legal dictionary [home, info]
34. Optimism: Accounting, Business Studies and Economics Dictionary [home, info]

Computing (2 matching dictionaries)

35. optimism: Free On-line Dictionary of Computing [home, info]
36. optimism: Encyclopedia [home, info]

Medicine (3 matching dictionaries)

37. optimism: online medical dictionary [home, info]
38. optimism: Dictionary of Cancer Terms [home, info]
39. optimism: Medical dictionary [home, info]

Religion (1 matching dictionary)

40. Optimism: Catholic Encyclopedia [home, info]

Science (1 matching dictionary)

41. optimism: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Slang (1 matching dictionary)

42. optimism: Urban Dictionary [home, info]

(Note: See optimistically for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (optimism) ▸ noun:  a general disposition to expect the best in all things ▸ noun:  the optimistic feeling that all is going to turn out well ▸ Also see optimistically ▸ Word origin ▸ Words similar to optimism ▸ Usage examples for optimism ▸ Popular adjectives describing optimism ▸ Words that often appear near optimism ▸ Rhymes of optimism ▸ Invented words related to optimism