We found 26 dictionaries that define the word someone:

General (22 matching dictionaries)

1. someone: Longman Dictionary of Contemporary English
2. someone: Merriam-Webster
3. someone: Oxford Learner's Dictionaries
4. someone: American Heritage Dictionary of the English Language
5. someone: Collins English Dictionary
6. someone: Vocabulary.com
7. Someone, someone, someone, someone: Wordnik
8. someone: Cambridge Advanced Learner's Dictionary
9. someone: Wiktionary
10. someone: Webster's New World College Dictionary, 4th Ed.
11. someone: The Wordsmyth English Dictionary-Thesaurus
12. someone: Infoplease Dictionary
13. someone: Dictionary.com
14. someone: Cambridge Essential American English Dictionary
15. Someone (Kelly Clarkson song), Someone (Laissons nous une chance), Someone (Lee Greenwood song), Someone (McDermott novel), Someone (SWV song), Someone: Wikipedia, the Free Encyclopedia
16. someone: Rhymezone
17. someone: FreeDictionary.org
18. someone: Mnemonic Dictionary
19. someone: TheFreeDictionary.com
20. someone: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

21. someone: Legal dictionary

Computing (1 matching dictionary)

22. someone: Encyclopedia

Miscellaneous (1 matching dictionary)

23. Sound-Alike Words (No longer online)

Slang (1 matching dictionary)

24. Someone: Urban Dictionary

(Note: See someones as well.)

Definitions from Wiktionary ( ) ▸ noun:  A partially specified but unnamed person. ▸ noun:  An important person. Similar: individual, person, somebody, mortal, soul, human, anyone, anybody, whoever, everyone, more... Opposite: nobody, no, one, none, neither, nothing Types: friend, enemy, acquaintance, stranger, neighbor, co-worker, boss, colleague, teammate, more... Phrases: someone else, trust someone, give someone the slip, let someone have it, drink someone under the table, more... Adjectives: only, special, last, certain, next, afraid, sure, more, likely, minute, glad Colors:     blue,     red,     green,     yellow,     purple, more... ▸ Words similar to someone ▸ Usage examples for someone ▸ Idioms related to someone ▸ Wikipedia articles (New!) ▸ Popular adjectives describing someone ▸ Words that often appear near someone ▸ Rhymes of someone ▸ Invented words related to someone