Incel

Incel is a term that is the shortened form of involuntary celibate, mostly referring to a man in this particular state due to the lack of attracting any potential female partners for romance and possibly even marriage. This is usually used as a slur against men who are seen as rather repulsive and antagonistic toward women and thus are causing their own problems in regards to not attracting a potential female partner.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, this term is used mostly for Smurfs who have not had any luck attracting female Smurfs and thus are forced to live in celibacy.