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gumshoe

American  
[guhm-shoo] / ˈgʌmˌʃu /

noun

  1. Slang. a detective.

  2. a shoe made of gum elastic or India rubber; rubber overshoe.

  3. sneaker.


verb (used without object)

gumshoed, gumshoeing
  1. Slang.

    1. to work as a detective.

    2. to go softly, as if wearing rubber shoes; move or act snoopily or stealthily.

gumshoe British  
/ ˈɡʌmˌʃuː /

noun

  1. a waterproof overshoe

  2. a rubber-soled shoe

  3. slang a detective or one who moves about stealthily

  4. slang a stealthy action or movement

"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. slang (intr) to act stealthily

"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 gumshoe

An Americanism dating back to 1860–65; gum 1 + shoe

Explanation

When you wear gumshoes, you're pulling on waterproof galoshes over your regular footwear. If you are a gumshoe, on the other hand, you're a private detective, investigating a case. The "detective" meaning of this word comes from the "galoshes" definition. In fact, during the late 19th century, gumshoes or gums were any type of rubber-soled shoes. Around the turn of the 20th century, to gumshoe meant "to sneak around," and by 1906, gumshoe became a common nickname for plainclothes detectives (or "private eyes"), famous for moving stealthily in their quiet rubber-soled shoes.

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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:

Farrell is terrific, as always, as an empathetic gumshoe investigating a trail of crime and corruption that rings true to devotees of L.A. noir, from Raymond Chandler to “Chinatown” to Jordan Harper.

From MarketWatch Jul. 31, 2026

The cops are jaded and too easily steered toward the wrong suspects, moving the gentle citizen gumshoe to step in and offer her gifted expertise.

From Salon Jun. 16, 2026

After 25 years, a family will be reunited with their missing relative thanks to a USA Today article and gumshoe police work.

From Los Angeles Times Nov. 27, 2024

Melling’s scenery-chewing portrayal of the budding writer — and, here, amateur gumshoe — is one of the film’s chief delights.

From Washington Post Jan. 3, 2023

In literature and in the popular imagination, the all-seeing private eye—the gumshoe, the cinder dick, the sleuthhound, the shadow—displaced the crusading sheriff as the archetype of rough justice.

From "Killers of the Flower Moon" by David Grann

Then he gumshoed around the neighborhood and found that Ohman, though uneducated in a formal sense, was a smart man who often expressed an urge to fool the scholars.

From Time Magazine Archive

"Has that grasping old monopolist gumshoed into town again?" inquired Washburn, and promptly ordered his secretary to get Boise on the telephone.

From Five Thousand an Hour : how Johnny Gamble won the heiress by George Randolph Chester

Today there are spooky gumshoed armies of "security consultants," "rent-a-cops," "private eyes," "outside experts"—every manner of shady operator who retails in "results" and discretion.

From The Hacker Crackdown, law and disorder on the electronic frontier by Bruce Sterling

When your trades are newspapering and gumshoeing, you tend to meet interesting people from all walks of life.

From Washington Post Mar. 22, 2022

It could have used one before Pearl Harbor, when global gumshoeing was a fine art among other powers.

From Time Magazine Archive

In all, some 17,000 names were carefully set down by Hague's 311 district leaders, with appropriate comments by gumshoeing ward heelers.

From Time Magazine Archive

When he began gumshoeing, back in 1949, he made $50 a day, and now he charges $100.

From Time Magazine Archive

I tell you I'm afraid of pussyfooting and gumshoeing around Seaton and Crane.

From The Skylark of Space by E. E. (Edward Elmer) Smith

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