unknown / unclear / indistinct
不明
His whereabouts are unknown.
unknown
Daiichi ni, shi no seishi no nengatsu ga fumei de aru.To start with, the dates of his birth and death are unknown.
unclear
Tabun kono hen darō to suisoku shita watashi no kentō wa, atatteiru no ka, hazureteiru no ka, sore sae fumei de atta.I thought it would be around there, but it was unclear if I was even right about that.
indistinct
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DiQt(ディクト)
無料
★★★★★★★★★★