MOST HACKNEYED is an adjective used to describe something that has been overused and is no longer interesting or original. The two crossword solutions for this term are TRITEST and STALEST. TRITEST means the most trite, which is a synonym for hackneyed, while STALEST means the most stale, which is another way of saying hackneyed. Both words refer to something that has been used so often that it has become dull and uninteresting.