The term 'EIGHTY' can be represented by the crossword solution 'FOURSCORE, ' which is a nine-letter word. The term 'FOURSCORE' is derived from the Bible, specifically the King James Version of the Bible, and is used to refer to the number eighty. It is found in the Bible in the book of Psalms, where it is written, 'For FOURSCORE years have I been his servant.' This phrase is used to emphasize the length of time that someone has served another person or entity.