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We found 33 dictionaries with English definitions that include the word vacuous:
Click on the first link on a line below to go directly to a page where "vacuous" is defined.

General (28 matching dictionaries)

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

Business (1 matching dictionary)

27. vacuous: Legal dictionary [home, info]

Computing (1 matching dictionary)

28. vacuous: Encyclopedia [home, info]

Medicine (1 matching dictionary)

29. vacuous: online medical dictionary [home, info]

Science (1 matching dictionary)

30. vacuous, vacuous: PlanetMath Encyclopedia [home, info]

Slang (1 matching dictionary)

31. vacuous: Urban Dictionary [home, info]

(Note: See vacuousness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (vacuous) ▸ adjective:  devoid of significance or point ("Vacuous comments") ▸ adjective:  complacently or inanely foolish ▸ Also see vacuousness ▸ Word origin ▸ Words similar to vacuous ▸ Usage examples for vacuous ▸ Popular nouns described by vacuous ▸ Words that often appear near vacuous ▸ Rhymes of vacuous ▸ Invented words related to vacuous