private investigator

An agent hired by a private party for the purpose of investigation or evidence gathering.

Japanese Meaning

私立探偵 / 民間探偵

The private investigator uncovered the hidden ledger that proved the embezzlement.

私立探偵は横領を証明する隠された帳簿を発見した。

Sense（1）

An agent hired by a private party for the purpose of investigation or evidence gathering.

private investigators

（ plural ）