half sister

noun

1. sister ( def 2 ).

half-sister

noun

1. the daughter of either of one's parents by another partner

Word History and Origins

Origin of half sister¹

Middle English word dating back to 1150–1200

Example Sentences

A federal judge on Tuesday dismissed a defamation lawsuit against Meghan, Duchess of Sussex, after her half sister accused her of spreading “disparaging, hurtful and false” statements in interviews.

From New York Times

Called Sally, she was Martha Jefferson’s half sister—and would one day play a significant role in Thomas Jefferson’s life.

From Literature

Breasia was the half sister of Dinkins’ son, and investigators have said both children were staying the night with him at the apartment where he was living with a girlfriend.

From Seattle Times

They are Dr. Goodenough’s half sister and half brother, not his sister and brother.

From New York Times

Her older half sister, Gretchen Webber-Manzella, 51, recalled Amber had a tumultuous childhood in the Dominican Republic and struggled in school.

From Washington Post