The term 'HELD ON' can be solved by two crossword solutions, 'CLUNG' (5 letters) and 'LASTED' (6 letters). 'CLUNG' is an intransitive verb which means to hold on tightly to something, usually with one's hands or arms. It is often used in the context of someone trying to stay in a difficult situation or to keep their grip on something. 'Lasted' is an intransitive verb which means to continue for a period of time. It is often used in the context of something that has been sustained or endured for a long period of time. Together, these two words describe the idea of holding on for a long period of time.