Of Sanskrit origin and meaning “compassion and mercy,” so let’s hope little Daya has some mercy when she someday catches you picking the best stuff out of her Halloween candy stash.
There isn't a really good nickname for Daya.
Famous people named Daya:
Singer/songwriter Daya (born Grace Martine Tandon).
Dayanara "Daya" Diaz is a character on "Orange is the New Black."