We found 31 dictionaries that define the word onslaught:

General (27 matching dictionaries)

1. onslaught: Longman Dictionary of Contemporary English
2. onslaught: Merriam-Webster
3. onslaught: Oxford Learner's Dictionaries
4. onslaught: American Heritage Dictionary of the English Language
5. onslaught: Collins English Dictionary
6. onslaught: Vocabulary.com
7. Onslaught, onslaught: Wordnik
8. onslaught: Cambridge Advanced Learner's Dictionary
9. onslaught: Wiktionary
10. onslaught: Webster's New World College Dictionary, 4th Ed.
11. onslaught: The Wordsmyth English Dictionary-Thesaurus
12. onslaught: Infoplease Dictionary
13. Onslaught, onslaught: Dictionary.com
14. onslaught: Online Etymology Dictionary
15. onslaught: Cambridge Essential American English Dictionary
16. Onslaught (DC Comics), Onslaught (Dove), Onslaught (band), Onslaught (comics), Onslaught (novel), Onslaught (video game), Onslaught, The Onslaught: Wikipedia, the Free Encyclopedia
17. Onslaught: Online Plain Text English Dictionary
18. onslaught: Webster's Revised Unabridged, 1913 Edition
19. onslaught: Rhymezone
20. onslaught: AllWords.com Multi-Lingual Dictionary
21. onslaught: Webster's 1828 Dictionary
22. onslaught: FreeDictionary.org
23. onslaught: Mnemonic Dictionary
24. onslaught: TheFreeDictionary.com
25. onslaught: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

26. onslaught: Legal dictionary

Computing (1 matching dictionary)

27. onslaught: Encyclopedia

Medicine (1 matching dictionary)

28. online medical dictionary (No longer online)

Slang (1 matching dictionary)

29. Onslaught: Urban Dictionary

(Note: See onslaughts as well.)

Definitions from Wiktionary ( ) ▸ noun:  A fierce attack. ▸ noun:  (by extension) A large number of people or things resembling an attack. Similar: onset, onrush, outpouring, attack, barrage, onslaughter, brunt, offensive, affray, line of attack, more... Opposite: repulse, repel, drive back Types: verbal onslaught, physical onslaught, emotional onslaught, cyber onslaught, spiritual onslaught, more... Phrases: opposite of onslaught, more... Adjectives: scale, first, german, sudden, furious, fierce, final, initial, next, japanese, general Colors:     crimson,     blood red,     charcoal,     steel gray,     ash gray, more... ▸ Word origin ▸ Words similar to onslaught ▸ Usage examples for onslaught ▸ Idioms related to onslaught ▸ Wikipedia articles (New!) ▸ Popular adjectives describing onslaught ▸ Words that often appear near onslaught ▸ Rhymes of onslaught ▸ Invented words related to onslaught