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Synonyms

fast one

American  

noun

Informal.
  1. a shrewd action, especially when unscrupulous or dishonest; an unfair trick, deceitful practice, dishonest dealing, etc..

    He pulled a fast one on me by paying me with a worthless check.


Etymology

Origin of fast one

An Americanism dating back to 1920–25

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:

Now they worried that Tahnoon was again playing a fast one.

From The Wall Street Journal Jul. 19, 2026

Instead, only the foreman signed off on it — the legal equivalent of pulling a fast one on the judicial process.

From Salon Dec. 14, 2025

"Knowing I had the chance to put my son two minutes from here was very important, because I can reach him any time, very fast," one of the firm's finance bosses, Melania Sandrin, explains.

From BBC Jul. 19, 2025

That’s because most Olympic finals are more tactical than fast, one reason why Cheptegei’s world record is nearly a minute better than the Olympic record.

From Los Angeles Times May 20, 2024

They hadn’t warned the crowd about illegal punches— and there was always a wise guy out there ready to pull a fast one.

From "The Chocolate War" by Robert Cormier

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