The term SUDDEN FALL can be described by three crossword solutions: PLUNGE (6 letters), TAILSPIN (8 letters), and HEADER (6 letters). A sudden fall can be likened to a PLUNGE, which is a sudden and steep drop. It can also be likened to a TAILSPIN, which is a rapid, uncontrolled rotation of an aircraft or other object. Finally, it can be likened to a HEADER, which is a dive or jump forward with the head leading. All three words describe a sudden, unexpected fall.