In common usage, the term single is often used to refer to someone who is not involved in any type of serious romantic relationship, including long-term dating, engagement, marriage, or someone who is single by choice.

What is legally single?

In legal definitions for interpersonal status, a single person refers to a person who is not in serious committed relationships, or is not part of a civil union. Single people may participate in dating and other activities to find a long-term partner or spouse.