Dictionary.com
Thesaurus.com
Synonyms

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.

Keep Reading on Vocabulary.com

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.

The play, which premiered at La Jolla Playhouse in 2022, brings audiences viscerally into the gumshoe work of archivists and researchers who authenticate, clarify and preserve artifacts of history.

From Los Angeles Times • Mar. 14, 2025

Kilpatrick isn’t entirely fresh to the gumshoe storytelling business, having appeared in HBO’s “Perry Mason.”

From Salon • Apr. 2, 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

The panel does intend on continuing its gumshoe work as long as possible, and is not planning to release its final report until December.

From Seattle Times • Sep. 21, 2022

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

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "gumshoe" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com