ac·quit
 /əˈkwıt/  verb  , -quits, -quit·ted, -quit·ting [  + obj  ]
  : to decide that someone is not guilty of a crime
   The jury acquitted the defendant because there wasn't enough evidence to convict him of the crime.
   She was acquitted of the murder of her husband. = She was acquitted of murdering her husband.
  — compare convict, 1
  acquit yourself
   : to act or behave in a specified way
    — used to express approval or (less commonly) disapproval of someone's behavior or performance
    The soldiers acquitted themselves well/honorably in battle.
    The young actress acquitted herself extremely well/capably in her first film.
    He acquitted himself poorly in handling the controversy.