We found 27 dictionaries that define the word bystander:

General (23 matching dictionaries)

1. bystander: Merriam-Webster.com
2. bystander: Oxford Learner's Dictionaries
3. bystander: American Heritage Dictionary of the English Language
4. bystander: Collins English Dictionary
5. bystander: Vocabulary.com
6. Bystander, bystander: Wordnik
7. bystander: Cambridge Advanced Learner's Dictionary
8. bystander: Wiktionary
9. bystander: Webster's New World College Dictionary, 4th Ed.
10. bystander: The Wordsmyth English Dictionary-Thesaurus
11. bystander: Infoplease Dictionary
12. Bystander, bystander: Dictionary.com
13. bystander: Cambridge Essential American English Dictionary
14. Bystander (magazine), Bystander, The Bystander: Wikipedia, the Free Encyclopedia
15. Bystander: Online Plain Text English Dictionary
16. bystander: Webster's Revised Unabridged, 1913 Edition
17. bystander: Rhymezone
18. Bystander: AllWords.com Multi-Lingual Dictionary
19. bystander: Free Dictionary
20. bystander: Mnemonic Dictionary
21. bystander: Dictionary/thesaurus

Art (1 matching dictionary)

22. Linguistic Glossary (No longer online)

Business (1 matching dictionary)

23. bystander: Legal dictionary

Medicine (1 matching dictionary)

24. online medical dictionary (No longer online)

Slang (1 matching dictionary)

25. bystander: Urban Dictionary

(Note: See bystanders as well.)

Definitions from Wiktionary ( ) ▸ noun:  A person who, although present at some event, does not take part in it; an observer, witness, or spectator. Similar: onlooker, stander by, beholder, viewer, on-looker, assistant, looker-on, sideliner, spectator, observer, more... Opposite: intervener, participant, witness, responder, actor Types: rubbernecker, gawker, onlooker, spectator, more... Phrases: innocent bystander, bystander effect, innocent bystander reaction, Bystander intervention, Green Dot Bystander Intervention, more... Adjectives: innocent, unresponsive, passive, mere, interested, disinterested, helpless, casual, impartial, neutral, sympathetic Colors:     gray,     beige,     taupe,     olive,     khaki, more... ▸ Words similar to bystander ▸ Usage examples for bystander ▸ Idioms related to bystander ▸ Wikipedia articles (New!) ▸ Popular adjectives describing bystander ▸ Words that often appear near bystander ▸ Rhymes of bystander ▸ Invented words related to bystander