We found 31 dictionaries that define the word Preposterous:

General (26 matching dictionaries)

1. preposterous: Longman Dictionary of Contemporary English
2. preposterous: Merriam-Webster
3. preposterous: Oxford Learner's Dictionaries
4. preposterous: American Heritage Dictionary of the English Language
5. preposterous: Collins English Dictionary
6. preposterous: Vocabulary.com
7. Preposterous, preposterous: Wordnik
8. preposterous: Cambridge Advanced Learner's Dictionary
9. preposterous: Wiktionary
10. preposterous: Webster's New World College Dictionary, 4th Ed.
11. preposterous: The Wordsmyth English Dictionary-Thesaurus
12. preposterous: Infoplease Dictionary
13. Preposterous, preposterous: Dictionary.com
14. preposterous: Online Etymology Dictionary
15. preposterous: Cambridge Essential American English Dictionary
16. Preposterous: Online Plain Text English Dictionary
17. preposterous: Webster's Revised Unabridged, 1913 Edition
18. preposterous: Rhymezone
19. preposterous: AllWords.com Multi-Lingual Dictionary
20. preposterous: Webster's 1828 Dictionary
21. preposterous: FreeDictionary.org
22. preposterous: Mnemonic Dictionary
23. preposterous: TheFreeDictionary.com
24. Preposterous: World Wide Words

Business (1 matching dictionary)

25. preposterous: Legal dictionary

Computing (1 matching dictionary)

26. preposterous: Encyclopedia

Medicine (1 matching dictionary)

27. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

28. preposterous: Wordcraft Dictionary

Slang (1 matching dictionary)

29. preposterous: Urban Dictionary

(Note: See preposterously as well.)

Definitions from Wiktionary (preposterous) ▸ adjective:  Absurd, or contrary to common sense. Similar: absurd, nonsensical, derisory, ludicrous, ridiculous, foolish, ass-backwards, sinistrous, contrary, imposterous, more... Opposite: sensible, rational, reasonable, logical Types: preposterously, preposterousness, preposterousnesses, more... Phrases: Captain Underpants and the Preposterous Plight of the Purple Potty People, most preposterous, more... Colors:     chartreuse,     fuchsia,     neon green,     electric blue,     hot pink, more... ▸ Word origin ▸ Words similar to Preposterous ▸ Usage examples for Preposterous ▸ Idioms related to Preposterous ▸ Wikipedia articles (New!) ▸ Popular nouns described by Preposterous ▸ Words that often appear near Preposterous ▸ Rhymes of Preposterous ▸ Invented words related to Preposterous