We found 27 dictionaries that define the word doer:

General (23 matching dictionaries)

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

Computing (1 matching dictionary)

22. doer: Encyclopedia

Miscellaneous (1 matching dictionary)

23. DOER: Acronym Finder

Slang (2 matching dictionaries)

24. doer, doer: Green’s Dictionary of Slang
25. doer: Urban Dictionary

(Note: See doering as well.)

Definitions from Wiktionary ( ) ▸ noun:  Someone who does, performs, or executes; an active person, an agent. Similar: actor, worker, do-er, performer, facient, factor, rightdoer, actress, executant, operant, more... Opposite: idler, slacker, lazy person Types: actor, agent, artisan, author, creator, employee, executor, inventor, maker, manufacturer, more... Phrases: evil doer, wrong doer, good doer, ill doer, brave deed doer, more... Adjectives: wrong, evil, well, non, ill, real, actual, proud, active, wicked, mere Colors:     red,     orange,     yellow,     green,     blue, more... ▸ Words similar to doer ▸ Usage examples for doer ▸ Idioms related to doer ▸ Wikipedia articles (New!) ▸ Popular adjectives describing doer ▸ Words that often appear near doer ▸ Rhymes of doer ▸ Invented words related to doer