WordReference Random House Unabridged Dictionary of American English © 2026
fast′ one′, [Informal.]
  1. Informal Termsa shrewd action, esp. 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.
  • 1920–25, American.

'fast one' also found in these entries (note: many are not synonyms or translations):
fast - pull - put over

Forum discussions with the word(s) "fast one" in the title:


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