The term GROW TIRESOME can be broken down into four crossword solutions: PALL (4 letters), WEAR (4 letters), CLOY (4 letters), and GETOLD (6 letters). PALL means to become dull or uninteresting, WEAR means to become diminished or weakened, CLOY means to become overly sweet or excessive, and GETOLD means to become old or outdated. Together, these words describe the process of something becoming less interesting or exciting over time.