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Synonyms

private detective

American  

noun

  1. a detective who is not a member of an official force but is employed by private parties.


private detective British  

noun

  1. Also called: private investigator.  an individual privately employed to investigate a crime, keep watch on a suspected person, or make other inquiries

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of private detective

First recorded in 1865–70

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.

It is the first of five novels starring Neal Carey: “a graduate student who, much like me,” the author wrote, “was too busy making a living as a private detective to finish his degree.”

From The Wall Street Journal • Feb. 6, 2026

Marten's family also hired a private detective to find her.

From BBC • Jul. 14, 2025

A private detective finally found Madrigal living in Las Vegas with her oldest son, Oren, who didn’t learn about his mother’s tragic, historic past until answering the researcher’s call.

From Los Angeles Times • Dec. 2, 2024

When Kirby accepted the role of Ruby — a Bondish M-meets-Q foil to a Los Angeles private detective played by Colin Farrell — in the Apple TV+ series “Sugar,” she found herself among kindred spirits.

From New York Times • Jun. 1, 2024

Anna’s guardian, the Reverend Dr. Black, had hired a private detective who had come to Holmes’s building.

From "The Devil in the White City" by Erik Larson