有効

N1 有益 yuueki beneficial, profitable N1 有する yuusuru to own, to be endowed with N1 有望 yuubou good prospects, full of hope, promising N1 有力 yuuryoku influence, prominence; potent N2 有難い arigatai grateful, thankful, appreciated N2 効力 kouryoku effect, efficacy N2 有料 yuuryou admission-paid, toll N3 在る・有る aru exist, be, have N3 有無 umu presence or absence, yes or no

N4 有 yuu, u / a.ru possess, have, exist N2 効 kou / ki.ku, kikime, nara.u merit, efficacy, efficiency