ABDL 

(Adult Baby/Diper Lover)

This is typically a lifestyle choice (A fetish for some) where a adult acts like a baby for comfort reasons. Many people use this to deal with stress, traumatic life events, or just because this is how they chose to live their life. People who are into this might wear adult diapers, use pacifiers, and other various objects that one might use for a child or toddler.

This does not mean that they are attracted to children. See also Age Regression.

Adult Baby Diaper Lover. A fetish

Stands for (Adult/baby/diper/lover)
A fetish for some, but not all.
Where a adult acts like a baby for sexual or comfort reasons. Can be related to DDLG / CGL. Many people use this to deal with stress.

A fetish where adults wear diapers and/or act like babies. Used in role-play.

It stands for Adult Baby Diaper Lover.

Fetish were ADULTS:
1. Act like babies and wear diapers

2. They just wear diapers

Has NOTHING AT ALL to do with actual babies or children

Adult Baby / Diaper Lover. A fetish among some adults who role-play as a baby wearing diapers. The degree of the fetish may extend anywhere from wearing diapers to wetting, and being seen/exposed in them.