The term 'GUILTY ONE' can be summarized by three crossword solutions: CULPRIT (7 letters), FELON (5 letters), and HEDIDIT (7 letters). CULPRIT is a person who has committed a crime or done something wrong, while FELON is a more serious criminal who has committed a felony. HEDIDIT is an informal phrase used to indicate that someone has done something wrong or illegal. All three terms refer to someone who is guilty of a crime or wrongdoing.