Understanding 'stepsister' involves recognizing complex family relationships and the mixed feelings they can entail. My stepsister and I had to navigate our new family life together.
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Non-Biological
'Stepsister' specifies a non-biological relationship established through parent's marriage, not by birth. I don't look like my stepsister because we're not related by blood.
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Modern Usage
'Stepsister' is commonly used and understood in contemporary language, representing modern family structures. In my favorite sitcom, the main character has a hilarious stepsister.