noun
promiscuity; promiscuous sexual relations
Refers to having many casual sexual partners without commitment. Often used in sociological or anthropological contexts, but also in everyday language.
See also: 雑婚
乱婚は性感染症のリスクを高める。
Promiscuity increases the risk of sexually transmitted infections.
その文化では乱婚が一般的だったと言われている。
It is said that promiscuity was common in that culture.