The term 'isn't straight' can be broken down into three crossword solutions: LEANS (5 letters), LIES (4 letters), and LISTS (5 letters). LEANS is a verb meaning to incline or bend from a vertical position, while LIES is a verb meaning to tell an untruth. Finally, LISTS is a verb meaning to make a record of items in a systematic way. All three words are related to the idea of something not being straight, either physically or figuratively.