It certainly seems to fit the dictionary definition as a "prejudice against a person or people on the basis of their membership of a particular group," where prejudice consists in prejudging people (e.g. males) and finding them undesirable on those grounds, without bothering to look any deeper. That sort of prejudice abounds on dating apps, though, since they are often designed to give users a handful of shallow characteristics to select from and make rapid decisions. People are often rejected just for being ugly, short, or old. ...