The crossword solution for the term 'MAXI'S OPPOSITE' is MINI, which is a four-letter word. MINI is a term used to describe something that is smaller than average or of a reduced size. It is often used to refer to small cars, such as the MINI Cooper, or other items that are much smaller than their full-sized counterparts. MINI is the opposite of Maxi, which is used to describe something that is larger than average or of an increased size.