half-sister half sister • half-size · · · Info · Definitions · Synonyms · Characters · · half-sister · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a sister who has only one parent in common with you. Synonyms: half sister, stepsister. · · Noun Definition 1 Synonyms · · · half sister · · Synonym 1 stepsister · · Synonym 2 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074