not guilty noun 4adjective 2forms 1 noun4 •A verdict or formal finding by the legal system that a defendant is not culpable for the crime with which the defendant was charged.My heart beats through five not guilties. Six, seven, nine, eleven. Seventeen not guilties. The prosecutor's lips curl. — 2003 •A formal plea by a defendant of not being culpable for the crime with which the defendant is charged.If you do not plead, a plea of not guilty will be entered for you. •A member of a jury or tribunal supporting acquittal, or a vote cast in support of acquittal.Two not guilties. Seven for conviction. "I'm a 'not guilty,'" she said. — 2006 •A person who has been acquitted of a crime.The not guilties walked out and went to work if they had jobs; the guilties were hauled away to spend maybe thirty days on the county farm growing cabbage. — 1997 adjective2 •Of a person, legally innocent of a crime which they have been accused of in a court of law.He was found not guilty because there was a reasonable doubt. •Innocent.The jury said he was not guilty. I knew he wouldn't have done something like that. formsnot guilties