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Synonyms

sleuth

American  
[slooth] / sluθ /

noun

sleuths plural
  1. a detective.

    Synonyms:
    shamus, gumshoe, private eye, private investigator, investigator
  2. a bloodhound, a dog used for tracking.


verb (used with or without object)

  1. to track or trail, as a detective.

sleuth British  
/ sluːθ /

noun

  1. an informal word for detective

  2. short for sleuthhound

"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

verb

  1. (tr) to track or follow

"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

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of sleuth

First recorded in 1875–80; short for sleuthhound

Explanation

Sleuth is a fun, sometimes playful, word for "detective." As a verb, it's also what a detective does. When you seek clues, you sleuth. You, sleuth, you! The word sleuth comes from the Old Norse sloth, meaning "trail" and sleuthing is following a trail. One type of bloodhound skilled at following trails is called a sleuthhound, and that word was shortened to sleuth in the late 19th Century, referring to an investigator. As an amateur sleuth, you caught the robber dressed as a mummy before the police did. He would have escaped if not for you, you meddling sleuth!

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Vocabulary lists containing sleuth

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.

Arable farmers may soon be able to stop slugs eating their crops thanks to research by a Shropshire-based university and the work of "slug sleuth" farmers.

From BBC • Jul. 7, 2026

Preparations for the event have been conducted in the utmost secrecy, with top reporters from the usually staid New York Times forced to sleuth through local hotels for hints of the guest list.

From Barron's • Jul. 1, 2026

"There are some similarities between me and my main character but she's much grumpier than me. I'd make a useless sleuth," said Perry.

From BBC • Jun. 2, 2026

Wherever the sleuth goes, the scribe is sure to follow—if about five steps behind.

From The Wall Street Journal • May 1, 2026

Nancy Drew is a smart and resourceful teenage sleuth who began solving mysteries in the 1930s and continues to solve them to this day.

From "Book Scavenger" by Jennifer Chambliss Bertman

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