noun \ˌdē-(ˌ)yü-ˈī\

: the crime of driving a vehicle while drunk; also : a person who is arrested for driving a vehicle while drunk

Full Definition of DUI

:  the act or crime of driving while affected by alcohol or drugs <was arrested for DUI>
:  a person who is arrested for or convicted of driving under the influence
:  an arrest or conviction for driving under the influence

Examples of DUI

  1. He was arrested for DUI.
  2. She was in jail on a DUI.
  3. He is a convicted DUI.

Origin of DUI

driving under the influence
First Known Use: 1969


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