“Paternal” in Japanese
Short answer
Paternal in Japanese is “腹違い” (harachigai). Full meaning: half- (sibling by a different mother), paternal.
Other ways to say “Paternal” in Japanese
父親らしい
chichioyarashii fatherly, paternal
父方
chichikata father's side of family; paternal (grandfather, uncle, etc.)
腹ちがい
harachigai half- (sibling by a different mother), paternal
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