Stepsibling
Child of a step-parent to whom one is not biologically related / From Wikipedia, the free encyclopedia
For the 2018 film, see Step Sisters. For other uses, see Step Brothers.
Step-siblings are children born of two different families who have been joined by marriage. A male step-sibling is a stepbrother and a female is a stepsister. The step-siblings relationship is connected through law and is not a blood relation.
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Charles and David are step-siblings as they are joined by the marriage of their parents Ben and Agatha. |
Step-siblings are sometimes abbreviated informally as stepsibs.[1]