fast one

noun Informal.

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.

Nearby words

  1. fast ice,
  2. fast lane,
  3. fast motion,
  4. fast neutron,
  5. fast of gedaliah,
  6. fast reactor,
  7. fast rhythm,
  8. fast smear,
  9. fast talk,
  10. fast telegram

Origin of fast one

An Americanism dating back to 1920–25 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019