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Synonyms

private investigator

American  

noun

  • private investigators
    plural
  1. private detective. PI, p.i., P.I.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of private investigator

First recorded in 1935–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Though Derek makes his living as a private investigator, he’s still loyal to the policeman’s vow to protect and to serve.

From The Wall Street Journal Aug. 19, 2026

"When I was growing up, I dreamed about becoming a private investigator," she said.

From Science Daily Jul. 16, 2026

His friends hired a private investigator and hung fliers begging him to come back.

From The Wall Street Journal Jul. 12, 2026

One of those paid, the private investigator Gavin Burrows, seemed to have entered two statements.

From BBC Jul. 8, 2026

“He’s a private investigator attached to the staff of my office. ...”

From "Native Son" by Richard Wright

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