Term of endearment that was formerly somewhat derogatory

I would say reclaimed, but Wikipedia says it should be re-appropriated

https://en.wikipedia.org/wiki/Category:Reclaimed_words

Linguistic reclamation is the reappropriation of a pejorative epithet by its target, to turn an insult into a positive term and deny others the ability to define it.

A reclaimed or reappropriated word is a word that was at one time pejorative but has been brought back into acceptable usage, usually starting within the communities that experienced oppression under that word but sometimes also among the general populace as well.[1] (The term "reclaimed word" more often implies usage by a member of the group that is referred.)