We found 25 dictionaries that define the word indubitable:

General (21 matching dictionaries)

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

Art (1 matching dictionary)

22. indubitable: Dictionary of Philosophical Terms and Names

Business (1 matching dictionary)

23. indubitable: Legal dictionary

Science (1 matching dictionary)

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

Slang (1 matching dictionary)

25. indubitable: Urban Dictionary

(Note: See indubitability as well.)

Definitions from Wiktionary (indubitable) ▸ adjective:  Clearly true; providing no possibility of doubt. ▸ noun:  That which is indubitable. Similar: unquestionable, beyond doubt, undoubtable, undeniable, indubitate, certain, irrefutable, ironclad, definite, absolute, more... Opposite: dubitable, questionable, doubtful, disputable Types: unquestionable, undeniable, indisputable, incontrovertible, more... Colors:     indigo,     royal blue,     sapphire,     azure,     cerulean, more... ▸ Word origin ▸ Words similar to indubitable ▸ Usage examples for indubitable ▸ Idioms related to indubitable ▸ Wikipedia articles (New!) ▸ Popular adjectives describing indubitable ▸ Popular nouns described by indubitable ▸ Words that often appear near indubitable ▸ Rhymes of indubitable ▸ Invented words related to indubitable