“Certain person” in Japanese
Short answer
Certain person in Japanese is “何の某” (nannonanigashi). Full meaning: certain person, certain amount.
Other ways to say “Certain person” in Japanese
何がし
nanigashi certain amount, some; certain person, Mr So-and-so, a certain ...
然る者
sarumono formidable person, shrewd person, someone not to be taken lightly, person of no common order; certain person (e.g. whose name cannot be disclosed), someone
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