We found 36 dictionaries that define the word testify:

General (26 matching dictionaries)

1. testify: Longman Dictionary of Contemporary English
2. testify: Merriam-Webster
3. testify, testify: Oxford Learner's Dictionaries
4. testify: American Heritage Dictionary of the English Language
5. testify: Collins English Dictionary
6. testify: Vocabulary.com
7. Testify, testify: Wordnik
8. testify: Cambridge Advanced Learner's Dictionary
9. testify: Wiktionary
10. testify: Webster's New World College Dictionary, 4th Ed.
11. testify: The Wordsmyth English Dictionary-Thesaurus
12. testify: Infoplease Dictionary
13. testify: Dictionary.com
14. testify: Online Etymology Dictionary
15. testify: Cambridge Essential American English Dictionary
16. (I Wanna) Testify, Testify (Caleb Johnson album), Testify (Common song), Testify (Isley Brothers song), Testify (M People album), Testify (M People song), Testify (P.O.D. album), Testify (Parliament song), Testify (Phil Collins album), Testify (Rage Against the Machine song), Testify (The Isley Brothers song), Testify (The Knocks EP), Testify: Wikipedia, the Free Encyclopedia
17. Testify: Online Plain Text English Dictionary
18. testify: Webster's Revised Unabridged, 1913 Edition
19. testify: Rhymezone
20. testify: AllWords.com Multi-Lingual Dictionary
21. testify: Webster's 1828 Dictionary
22. testify: FreeDictionary.org
23. testify: Mnemonic Dictionary
24. testify: TheFreeDictionary.com

Business (6 matching dictionaries)

25. testify: Merriam-Webster Legal Dictionary
26. testify: Webster's New World Law Dictionary
27. testify: Law.com Dictionary
28. Everybody's Legal Dictionary (No longer online)
29. Glossary of Legal Terms (No longer online)
30. testify: Legal dictionary

Computing (1 matching dictionary)

31. testify: Encyclopedia

Medicine (1 matching dictionary)

32. testify: Medical dictionary

Miscellaneous (1 matching dictionary)

33. testify: Idioms

Slang (1 matching dictionary)

34. testify: Urban Dictionary

(Note: See testified as well.)

Definitions from Wiktionary ( ) ▸ verb:  To make a declaration, or give evidence, under oath. ▸ verb:  To make a statement based on personal knowledge or faith. Similar: bear witness, attest, evidence, prove, show, take the stand, verify, testimonialize, depose, take oath, more... Types: bear witness, give evidence, give testimony, more... Phrases: testify to, testify against, testify under oath, more... Colors:     black,     white,     gray,     red,     blue, more... ▸ Word origin ▸ Words similar to testify ▸ Usage examples for testify ▸ Idioms related to testify ▸ Wikipedia articles (New!) ▸ Words that often appear near testify ▸ Rhymes of testify ▸ Invented words related to testify