Sadie, meaning "princess," comes as a nickname from Sarah. Here are five ways you can use Sadie without Sarah.
Sandra, a short form of Alexandra, meaning "man's defender."
Saranda, an Old Greek word meaning "forty."
Sadira, a Persian name meaning "lotus."
Sadia/Sadiya, meaning "lucky" in Arabic.
Saida, pronounced SAY-duh, a variant of Zaida meaning "lucky, fortunate" in Arabic.