in·cel | \ ˈin-ˌsel \
Definition of incel
: a person (usually a man) who regards himself or herself as being involuntarily celibate and typically expresses extreme resentment and hostility toward those who are sexually active .The term "incels" emerged from a Reddit group in which tens of thousands of users, most of them young men, commiserate about their lack of sexual activity—many of them placing the blame on women.
— Josh O'Kane
In recent years, a number of these men have identified as so-called incels, short for involuntary celibates, an online subculture of men who express rage at women for denying them sex and who frequently fantasize about violence and celebrate mass shooters in their online discussion groups.
— Julie Bosman et. al
“Incel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/incel. Accessed 20 Mar. 2022.