someone

someonepronoun

American /ˈsʌmˌwʌn/ British /ˈsʌmˌwʌn/ The strongest stress is on the first part: SUM-wun.
  1. a person who is not named or not known, or whose identity does not matter

    Someone is used mainly in positive statements to mean a particular but unnamed person: someone called for you. In questions and negative sentences, anyone is usually used instead: did anyone call?, not did someone call?, unless the speaker has a particular person in mind.

    Collocations

    phrase someone else

    Synonyms somebody

    Compare anyone (anyone is used mainly in questions and negatives; someone is used mainly in positive statements)

    For translators (sense 1)

    Grammar trap Someone usually shifts to anyone when a sentence becomes a question or a negative (Someone called becomes Did anyone call?), but someone is kept when the speaker has a particular person in mind.

Word family

Common mistakes

Did someone see my keys? Did anyone see my keys?
In a question with no particular person in mind, anyone is the usual choice, not someone.

See also anyone