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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.

Enter Dell Chandler, a failed English professor turned bootstrapping private detective, hired by Dr. Cutty to investigate.

From Los Angeles Times • May 12, 2026

Claude, meanwhile, having left the police to become a private detective, is obsessed with solving a string of related wartime murders, including that of Huguette’s father.

From The Wall Street Journal • Jan. 16, 2026

She said a private detective hired by the family found no criminal records for a person named Paramjit Singh in the state, suggesting authorities may have mistaken him for someone else.

From BBC • Oct. 13, 2025

This much I can tell you: Colin Farrell plays a private detective in “Sugar.”

From New York Times • Apr. 5, 2024

A lawyer and a former private detective with the Burns agency, Davis had a groomed sleekness.

From "Killers of the Flower Moon" by David Grann

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