- of, for, or relating to people of the same sex: same-sex schools
- of, for, or relating to homosexuals: same-sex marriage
- Involving or restricted to members of the same sex: same-sex schools.
- Of or involving gay men or lesbians: same-sex couples; same-sex marriage.
- The same gender to which one is referring, often when referring to oneself.
- Alternative spelling of same-sex.