The term 'come crashing down' can be summarized by the crossword solution 'COLLAPSE, ' which is an 8-letter word. COLLAPSE is a verb that means to suddenly fall or COLLAPSE, often due to external forces such as gravity or a lack of support. It is often used to describe buildings or structures that have been weakened and can no longer support their own weight. The phrase 'come crashing down' is often used to describe something that has been destroyed or ruined due to a sudden event.