find (one) guilty
To determine and declare in court that one is guilty of a crime. How serious do you think the prison sentence will be if the jury finds him guilty?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
find someone guiltyand find someone innocent; find someone not guilty
to decide guilt or innocence and deliver a verdict in a court of law. The judge found the defendant not guilty by reason of insanity. The jury found the defendant innocent.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.