half sister-in-law

== English == === Etymology === From half sister +‎ -in-law or half + sister-in-law. === Noun === half sister-in-law (plural half sisters-in-law) The half sister of one's spouse. The wife of one's half-sibling. The wife of the half-sibling of one's spouse. ==== Antonyms ==== half brother-in-law === See also === maternal half sister-in-law paternal half sister-in-law