<p><strong>Noun:</strong></p><ul><li>Someone who practices coitus interruptus or masturbation: A confirmed onanist, or chronic masturbator, she saw no need for a relationship with someone other than herself.</li><li>Someone who commits acts that are thought to be sexually deviant: The city is famous for gamblers, prostitutes, alcoholics, fetishists, onanists, and pornographers.</li><li>Someone whose behavior exhibits self-serving intellectual or emotional gratification: They seem to be a clique of onanists with nothing better to do than spend their lives at a computer terminal, insulting other people.</li></ul>