We found 16 dictionaries that define the word without doubt:

General (13 matching dictionaries)

1. without doubt: Longman Dictionary of Contemporary English
2. without (a) doubt, without doubt: Merriam-Webster
3. without doubt: Oxford Learner's Dictionaries
4. without doubt: Vocabulary.com
5. without (a) doubt: Cambridge Advanced Learner's Dictionary
6. without doubt: Wiktionary
7. without doubt: Dictionary.com
8. without doubt: Rhymezone
9. without doubt: FreeDictionary.org
10. without doubt: Mnemonic Dictionary
11. without doubt: TheFreeDictionary.com

Business (1 matching dictionary)

12. without doubt: Legal dictionary

Computing (1 matching dictionary)

13. without doubt: Encyclopedia

Miscellaneous (1 matching dictionary)

14. without doubt: Idioms

Definitions from WordNet (without doubt) ▸ adverb:  admittedly ▸ adverb:  used to reinforces an assertion ▸ adverb:  with certainty Opposite: certain, sure, positive, definite Phrases: without a doubt, without (a) doubt, beyond without a shadow of a doubt, without any doubt, without a second doubt, more... ▸ Words similar to without doubt ▸ Usage examples for without doubt ▸ Idioms related to without doubt ▸ Wikipedia articles (New!) ▸ Words that often appear near without doubt ▸ Rhymes of without doubt ▸ Invented words related to without doubt