The crossword solution for the term 'Hang On Tightly' is 'Holdfast' which is an 8 letter word. Holdfast is a term used to describe something that is held firmly in place, such as a rope or anchor. It can also be used figuratively to describe someone who is determined to stay in a certain position or situation. Therefore, the phrase 'Hang On Tightly' can be interpreted as holding on firmly and not giving up.