These acronyms can be used for any combination of genders, including WSW/W4W for “Women Seeking Women,” or “Woman for Woman,” WSM/W4M for “Woman Seeking Man” or “Woman For Man,” or MSW/M4W for “Man Seeking Woman” or “Man For Woman.” The term MWM can be used in other ways in personal ads as well, the second most common being “Men Wanting Men.” This term has other popular variants, MSM and M4M, which stand for “Man Seeking Man” or “Man For Man,” according to Acronym Finder. Another common related acronym is MWF, which stands for “Married White Female,” according to Urban Dictionary. These men are normally looking to cheat on their partners.
Most commonly, MWM stands for “Married White Male.” According to Online Slang Dictionary, this is used mainly in personal ads for people seeking discreet encounters.