UPSIDE DOWN is a term used to describe something that is inverted or reversed, with the top and bottom switched. The crossword solutions for this term are INVERSE (7 letters), OVER (4 letters), ENDFOREND (9 letters), and TOPSYTURVY (10 letters). INVERSE means to turn something around so that it is the opposite of what it was before. OVER implies that something is placed on top of something else. ENDFOREND suggests that something is completely reversed. TOPSYTURVY is an expression used to describe something that is in a state of chaos or disorder.