The crossword solution for the term CLUNG ONTO is HELD, which is a four-letter word. The phrase 'clung onto' implies that someone or something was holding on to something else with a strong grip. This could be interpreted as an emotional attachment, such as a person clinging to a loved one, or a physical attachment, such as a person clinging to a rope. In either case, the action of clinging implies that the person or object is not letting go and is determined to remain attached.