ABDL
noun/ˌeɪˌbiːˌdiːˈɛl/
Etymology Initialism of adult baby diaper lover.
1
Lifestyle, Sexuality Sexual practices involving paraphilic infantilism, sexual arousal that stems from pretending one is an infant (autonepiophilia) through the use of diapers and other paraphernalia, or sexual arousal attained from wearing diapers.
2
Lifestyle, Sexuality Broadly Specifically, diaper fetishism; diaperism.
3
Colloquial A person who engages in ABDL practices; an adult baby or a diaper lover.
Chiefly ABDL slang