What is another word for step-sisters?
Pronunciation: [stˈɛpsˈɪstəz] (IPA) 
Step-sisters are a common term used to refer to the daughters of a stepparent, but there are various other synonyms for this relationship. These synonyms may differ culturally and linguistically, but they essentially mean the same. They are half-sisters (related by one parent), blended sisters (related by two non-biological parents), or bonus sisters (added to the family through a parent's remarriage). Terms like in-law sisters or faux sisters may also be used. Whatever term is used, the relationship between step-sisters is unique, and it takes time, respect, and effort to build and sustain it.
