Noun
casual sex (uncountable)
Sexual activity that is undertaken without commitment, emotional attachment or personal familiarity between the participants involved.
He was after more than casual sex; he was looking for a long-term relationship.
Casual sex has become a casual part of the cultural conversation—women stalk prey on dating apps just like men do—and yet it’s still taboo to be a woman who has multiple partners. Source: Internet
Casual sex and hookups are fine and all but the whole Tinder-fication/instant gratification of online dating and commodifying others based on shallow, narcissistic traits puts people out of touch with reality. Source: Internet
Casual sex inevitably leads to casualty sex, with its train of heartbreak, disappointment, and disease. Source: Internet