fast one

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.

Word History and Origins

Origin of fast one¹

An Americanism dating back to 1920–25

Related Words

• atrocity 
• breach 
• case 
• corruption 
• evil 
• felony 
• infraction 
• lawlessness 
• misconduct 
• misdeed 
• misdemeanor 
• scandal 
• transgression 
• violation 
• wrongdoing