The story
From diaper + -ism. Coined by New Zealand-American psychologist and sexologist John Money in 1986 (see quotations).
Etymology from Wiktionary, CC BY-SA 4.0.
diaperism
dia·per·i·smToday it means: A kink or fetish in which arousal is derived from diapers, especially wearing them; a kink in which one engages in diaperplay; diaper fetishism, ABDL. Full definition →