Becoming mature is a process that happens over time. It involves physical, mental, and emotional growth. The term 'become mature' can be broken down into two words: AGE and RIPEN. AGE is a 3 letter word that refers to the passing of time and the physical changes that occur as a result. RIPEN is a 5 letter word that refers to the mental and emotional growth that occurs as one matures. Together, these two words describe the process of becoming mature.