Incel (( IN-sel; a portmanteau of "involuntary celibate") is a term associated with an online subculture of mostly male and heterosexual people who define themselves as unable to find a romantic or sexual partner despite desiring one, and blame, objectify and denigrate women and girls as a result. Originally coined as "invcel" around 1997 by a queer Canadian female student known as Alana, the spelling had shifted to "incel" by 1999, and the term later rose to prominence in the 2010s, following the influence of misogynistic terrorists Elliot Rodger and Alek Minassian.
https://en.wikipedia.org/wiki/Incel