The crossword solutions for the term 'AND ___ GROW ON' are AGE and ONETO. AGE is a 3 letter word meaning the length of time that a person or thing has existed. ONETO is a 5 letter word meaning the ratio of one part to another, usually expressed as a fraction. Together, the two words form the phrase 'And AGE grow on, ' which is used to express the idea that time passes quickly and that people and things AGE over time.