Dictionary.com
Thesaurus.com
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.

See Examples For:

"When I was growing up, I dreamed about becoming a private investigator," she said.

From Science Daily Jul. 16, 2026

His friends hired a private investigator and hung fliers begging him to come back.

From The Wall Street Journal Jul. 12, 2026

“When I applied to become a private investigator, I had assumed that there would be a little bit more back-and-forth,” she told me.

From Los Angeles Times Jul. 7, 2026

The investigation was officially reopened in June 2024 after a private investigator hired by her son passed a 24-page report to Greek authorities.

From BBC Jun. 30, 2026

Fenton Hardy, Frank and Joe’s dad, was a private investigator who used to work with the local Bayport police force.

From "Hopping Mad (The Hardy Boys: Secret Files, #4)" by Franklin W. Dixon

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training