The term 'Grow Older' can be represented by four different crossword solutions: RIPEN (5 letters), AGE (3 letters), MATURE (6 letters), and GETON (5 letters). RIPEN is a verb that means to become ripe or ready for use, usually referring to food. AGE is a verb that means to grow old or to become more MATURE. MATURE is an adjective that describes something that has reached full development or is of full AGE. Finally, GETON is a verb that means to make progress or to advance in AGE. All of these words refer to the process of growing older.