noun: A member of an online subculture of people (mostly men) who define themselves as unable to find a romantic or sexual partner despite desiring one.
noun: (rare) Anyone who is not sexually active despite desiring to be.
noun: (uncountable, seduction community, informal) "Involuntary celibacy": the state of not being sexually active despite wishing to be.
adjective: (seduction community) Not having sexual relations despite wishing to.