Adopted Sis Meaning: A lady that could almost be mistaken for your sister because of the bond you share.
Adopted Sis Literal meaning: A person who is not one’s biological sibling but was legally and socially raised as your female sibling.
Popularity: High
Example:
Gayle: Stacy, your adopted sister, was looking for you yesterday.
Stacy: Adopted sister?
Gayle: I mean Anna, your best friend.
Stacy: Oh! That’s a cute nickname. I’m going to change her contact name to “Adopted sis.”
Related Nicknames: Bestie, Dearest, Dearest One, Babes, Sista, 100 Best Nicknames for Sisters.