内ない探たん

noun, noun or participle which takes 'suru'

private inquiry; secret investigation

Refers to investigating something discreetly, without making it public. Often used in contexts like corporate or personal background checks.

• 会かい社しゃは彼かれの経けい歴れきを内ない探たんした。

  The company conducted a private inquiry into his background.

• 内ない探たんの結けっ果か、不ふ正せいは見みつからなかった。

  As a result of the secret investigation, no wrongdoing was found.