This word refers to a woman who demands what she deserves in love. She is not willing to settle. The word was coined by Chappell Roan in her song Femininomenon.
One of Chappell Roan’s songs, Mixing the two words—“Feminine” and “Phenomenon”.
In one’s words—this could describe a Phenomena where girls go out and honestly blow the club up, disregarding their boyfriends alongside with negative toxicity.