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We found 37 dictionaries with English definitions that include the word serious:
Click on the first link on a line below to go directly to a page where "serious" is defined.

General (31 matching dictionaries)

1. serious: Merriam-Webster.com [home, info]
2. serious: Oxford Dictionaries [home, info]
3. serious: American Heritage Dictionary of the English Language [home, info]
4. serious: Collins English Dictionary [home, info]
5. serious: Vocabulary.com [home, info]
6. serious: Macmillan Dictionary [home, info]
7. Serious, serious: Wordnik [home, info]
8. serious: Cambridge Advanced Learner's Dictionary [home, info]
9. serious: Wiktionary [home, info]
10. serious: Webster's New World College Dictionary, 4th Ed. [home, info]
11. serious: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. serious: Infoplease Dictionary [home, info]
13. serious: Dictionary.com [home, info]
14. serious: Online Etymology Dictionary [home, info]
15. serious: UltraLingua English Dictionary [home, info]
16. serious: Cambridge Dictionary of American English [home, info]
17. Serious (Donna Allen song), Serious (Duran Duran song), Serious (Luther Allison album), Serious (TV series), Serious: Wikipedia, the Free Encyclopedia [home, info]
18. Serious: Online Plain Text English Dictionary [home, info]
19. serious: Webster's Revised Unabridged, 1913 Edition [home, info]
20. serious: Rhymezone [home, info]
21. serious: AllWords.com Multi-Lingual Dictionary [home, info]
22. serious: Webster's 1828 Dictionary [home, info]
23. SERIOUS: Dictionary of Americanisms (1848) [home, info]
24. serious: Free Dictionary [home, info]
25. serious: Mnemonic Dictionary [home, info]
26. serious: WordNet 1.7 Vocabulary Helper [home, info]
27. serious: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. serious: Dictionary/thesaurus [home, info]
29. serious: Wikimedia Commons US English Pronunciations [home, info]

Business (1 matching dictionary)

30. Serious (single), Serious (song), serious: Legal dictionary [home, info]

Computing (1 matching dictionary)

31. serious: Encyclopedia [home, info]

Medicine (1 matching dictionary)

32. Serious (single), Serious (song), serious: Medical dictionary [home, info]

Miscellaneous (2 matching dictionaries)

33. SERIOUS: Acronym Finder [home, info]
34. serious: Idioms [home, info]

Slang (1 matching dictionary)

35. Serious, Serious: Urban Dictionary [home, info]

(Note: See seriousness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (serious) ▸ adjective:  of great consequence ("Marriage is a serious matter") ▸ adjective:  concerned with work or important matters rather than play or trivialities ("A serious student of history") ▸ adjective:  requiring effort or concentration; complex and not easy to answer or solve ("Raised serious objections to the proposal") ▸ adjective:  appealing to the mind ("A serious book") ▸ adjective:  completely lacking in playfulness ▸ adjective:  causing fear or anxiety by threatening great harm ("A serious wound") ▸ Also see seriousness ▸ Word origin ▸ Words similar to serious ▸ Usage examples for serious ▸ Popular nouns described by serious ▸ Words that often appear near serious ▸ Rhymes of serious ▸ Invented words related to serious