The crossword solution for the term 'Prefix with FALL' is PRAT. This is a four-letter word that is used as a prefix to the word 'FALL'. It is derived from the Latin word 'pratum', which means 'MEADOW'. The prefix PRAT is often used to describe something that is related to a MEADOW, such as a MEADOW-like landscape or a MEADOW-like atmosphere. It can also be used to describe something that is related to the season of FALL, such as a FALL-like color or a FALL-like feeling.