half sister

/ˈhæf sɪstɚ/

half sister

English Noun

Definition

A female sibling sharing a single parent.

Etymology

From Middle English halfesister, half-suster, half sister, equivalent to half- + sister. Compare Dutch halfzus, halfzuster (“half-sister”), German Halbschwester (“half-sister”), Swedish halvsyster (“half-sister”), Icelandic hálfsystir (“half-sister”).