Dictionary.com
Thesaurus.com
Synonyms

private investigator

American  

noun

  1. private detective. PI, p.i., P.I.


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.

Prince Harry's legal team says private investigator Gavin Burrows signed a statement in 2021 confirming he carried out some of the most serious wrong-doing alleged against the Mail newspapers.

From BBC • Mar. 31, 2026

A private investigator who was initially a key witness in a privacy case brought by several claimants against the publisher of the Daily Mail, including Prince Harry, has denied "switching sides" out of revenge.

From BBC • Mar. 23, 2026

In 1986, Don Winslow was a 33-year-old New York-born, world-traveling private investigator who, during stakeouts, read crime fiction by authors such as Elmore Leonard, James Ellroy and Joseph Wambaugh.

From The Wall Street Journal • Feb. 6, 2026

He added that her notes referred to a private investigator who had charged her £400.

From BBC • Jan. 26, 2026

He was a successful private investigator who’d solved lots of tough cases.

From "A Monster of a Mystery (The Hardy Boys: Secret Files, #5)" by Franklin W. Dixon