ADJ.
finished
VERB + MUA
mail, make-up
MUA + NOUN
ua
noun
Initialism of make-up artist.
As Ruth touched up the make-up the MUA had just finished on Ola, she enjoyed a glass of prosecco or three with her sister and best friends.
Initialism of mail user agent.
A “mail user agent” (MUA or UA) that lets users read and compose mail[.]