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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.

To the side stood private investigator Carmelo Castañeda.

From Los Angeles Times • Jun. 17, 2026

Our everyman is Ben Reilly — played by the incomparable Nicolas Cage, making his live-action television debut — a private investigator who moonlights as the city’s only superhero, the Spider.

From Los Angeles Times • May 13, 2026

David Sherborne, for the claimants, repeatedly questioned the private investigator about the statement on Monday - having been given permission by the judge to treat him as a hostile witness and conduct a cross-examination.

From BBC • Mar. 23, 2026

Hartley said the internal inquiry was mainly relying on the spreadsheets of payments to Whittamore - which might have been inaccurate - not the notes of the private investigator himself.

From BBC • Feb. 12, 2026

Don your detective cap and become your own private investigator!

From "The Science of Breakable Things" by Tae Keller

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