One of two or more persons born of the same parents or, sometimes, having one parent in common; brother or sister
One's stepparent's daughter by a former marriage
A female fellow member of the same race, church, profession, organization, etc.
A person who is akin to another by virtue of blood; that is a blood relation, such as sister, brother, aunt, uncle, parent, child, and so on.
A sister through one parent only
Find another word for half-sister. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for half-sister, like: sibling, kin, stepsister, sister by one parent, sister, relative and half-sister.