A label self-applied by members of the online subculture of men (mostly young, white, and heterosexual) who claim to be unable to find or attract women as romantic partners and post consequent expressions of self-pity, entitlement, and misogyny, as well sometimes promoting or condoning violence toward others (especially those who are sexually active). The phrase is commonly contracted as "incel." Elliot Rodger, perpetrator of the 2014 Isla Vista killings, has been celebrated as a hero by some involuntary celibates—so-called incels.

A fall, typically off of something being ridden, such as a bike, motorcycle, or horse. Did you her about Tara? Her involuntary dismount yesterday earned her a trip to the OR and two months in a cast. I gave up motorcycles after one too many involuntary dismounts.