Dictionary/発病はつびょうHatsubyouJLPT N1発病 (Hatsubyou) is a Japanese noun meaning “onset of an illness, falling ill”.Meaningsnoun, suru verb, intransitive verbonset of an illness; falling illKanji in 発病発departure病illRelated words病むto fall ill病院hospital発見discovery病気illness (usu. excluding minor ailments, e.g. common cold)開発development発表announcement爆発explosion発生occurrence発departure出発departure病illness発言statement