different father
Used in kinship terms to indicate siblings who share the same mother but have different fathers. Often appears in compounds like 異父兄弟 (half-brother with a different father) and 異父姉妹 (half-sister with a different father).
He has two half-brothers with a different father.
異父姉妹 refers to sisters who share the same mother but have different fathers.
half-sibling (different father)
half-sister (different father); half-sisters (different father)
Compound of 異 (i, 'different') and 父 (fu, 'father'). The reading いふ is the on'yomi of both characters.