opposite sex

American  

[op-uh-zit seks, op-uh-sit] / ˈɒp ə zɪt ˈsɛks, ˈɒp ə sɪt /

noun

1. Often the opposite sex women in reference to men or men in reference to women.

   Do you have many friends of the opposite sex?

---

adjective

1. Usually opposite-sex of or relating to two or more persons of different genders: Opposite-sex marriage is more normalized than same-sex marriage.

   The study is about relationships between children and their opposite-sex parents.

   Opposite-sex marriage is more normalized than same-sex marriage.

opposite sex British  

noun

1. women in relation to men or men in relation to women

---

Usage

The phrase opposite sex relies on an assumption that men and women are indeed opposites. This upholds a binary view of gender, and also usually conflates sex and gender, both of which may be considered controversial. A less binary version of the phrase is other genders.

Etymology

Origin of opposite sex

First recorded in 1710–30