The term 'BACKS UP' can be broken down into four crossword solutions: CONDONES (8 letters), SAVES (5 letters), CLOGS (5 letters), and SWOLFREVO (9 letters). CONDONES means to accept or allow something, usually something that is considered wrong or immoral. SAVES means to keep or preserve something from harm or loss. CLOGS means to block or obstruct something, usually with a physical object. Finally, SWOLFREVO is an anagram of the word 'FLOWERS', which are often used as symbols of love and appreciation. All of these words together suggest that BACKS UP is a term that means to support or protect something, either emotionally or physically.