We found 37 dictionaries that define the word happiness:

General (24 matching dictionaries)

1. happiness: Merriam-Webster.com
2. happiness: Oxford Learner's Dictionaries
3. happiness: Collins English Dictionary
4. happiness: Vocabulary.com
5. Happiness, happiness: Wordnik
6. happiness: Cambridge Advanced Learner's Dictionary
7. happiness: Wiktionary
8. happiness: The Wordsmyth English Dictionary-Thesaurus
9. happiness: Infoplease Dictionary
10. Happiness, happiness: Dictionary.com
11. happiness: Cambridge Essential American English Dictionary
12. Happiness (Alexis Jordan song), Happiness (Arashi song), Happiness (Bill Anderson song), Happiness (Dance Gavin Dance album), Happiness (Elliott Smith song), Happiness (Finnish band), Happiness (Fridge album), Happiness (Goldfrapp song), Happiness (Hurts album), Happiness (Japanese band), Happiness (Japanese group), Happiness (Lisa Germano album), Happiness (Pointer Sisters song), Happiness (Red Velvet song), Happiness (Robert Palmer song), Happiness (Sam Sparro song), Happiness (TV series), Happiness (The Beloved album), Happiness (The Weepies album), Happiness (Vanessa Williams song), Happiness (disambiguation), Happiness (film), Happiness (manga), Happiness (short story), Happiness: Wikipedia, the Free Encyclopedia
13. Happiness: Online Plain Text English Dictionary
14. happiness: Webster's Revised Unabridged, 1913 Edition
15. happiness: Rhymezone
16. Happiness: AllWords.com Multi-Lingual Dictionary
17. happiness: Free Dictionary
18. happiness: Mnemonic Dictionary
19. happiness: LookWAYup Translating Dictionary/Thesaurus
20. happiness: Dictionary/thesaurus
21. happiness: Wikimedia Commons US English Pronunciations
22. happiness: Webster's 1828 Dictionary

Art (1 matching dictionary)

23. happiness: Dictionary of Philosophical Terms and Names

Business (1 matching dictionary)

24. happiness: Legal dictionary

Computing (1 matching dictionary)

25. happiness: Encyclopedia

Medicine (3 matching dictionaries)

26. happiness: Medical dictionary
27. online medical dictionary (No longer online)
28. Medical Dictionary (No longer online)

Miscellaneous (3 matching dictionaries)

29. happiness: Glosario de términos filosóficos (en inglés)
30. happiness: Idioms
31. Encyclopedia of Graphic Symbols (No longer online)

Religion (2 matching dictionaries)

32. Happiness: Catholic Encyclopedia
33. Scientology® and Dianetics® (No longer online)

Science (1 matching dictionary)

34. FOLDOP - Free On Line Dictionary Of Philosophy (No longer online)

Tech (1 matching dictionary)

35. Rane Professional Audio Reference (No longer online)

(Note: See happinesss as well.)

Definitions from Wiktionary ( ) ▸ noun:  (uncountable) The emotion of being happy; joy. ▸ noun:  (archaic, uncountable) prosperity, thriving, wellbeing. ▸ noun:  (archaic, uncountable) Good luck; good fortune. ▸ noun:  (obsolete, countable) Fortuitous elegance; unstudied grace; — used especially of language. Similar: felicity, contentment, happyness, prosperity, contentedness, unhappiness, satisfaction, blissfulness, joyfulness, enjoyment, more... Opposite: sadness, misery, despair, gloom, unhappiness Types: contentment, joy, pleasure, gratification, elation, euphoria, satisfaction, more... Phrases: with happiness, right to the pursuit of happiness, greatest happiness principle, happiness theory, double happiness, more... Adjectives: own, human, greatest, true, future, eternal, much, personal, domestic, perfect, real Colors:     yellow,     pink,     orange,     turquoise,     sky blue,     lime green,     lavender,     coral,     gold,     peach ▸ Words similar to happiness ▸ Usage examples for happiness ▸ Idioms related to happiness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing happiness ▸ Words that often appear near happiness ▸ Rhymes of happiness ▸ Invented words related to happiness