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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.

See Examples For:

His latest role is as a former cop turned private detective in Peacock’s new crime thriller, “M.I.A.,” streaming now.

From Los Angeles Times May 29, 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

A private detective, Auguste Bell, arrives to solve the crime.

From The Wall Street Journal Dec. 12, 2025

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

“Mr. Comstock had received some information,” a private detective wrote, noting that Comstock had reported that on May 14 an unidentified man had been seen lurking on the hill where Whitehorn’s body was subsequently found.

From "Killers of the Flower Moon" by David Grann

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