Age/eɪdʒ/ Definition 1 of 5Pro Tip 1/2Age Comparison Specify exact age when comparing two things or people to show the differences clearly. A 10-year-old car usually has more wear than a 2-year-old car. Pro Tip 2/2Age vs. Aged Use 'age' for years lived and 'aged' to reference someone's appearance or health at that age. His age is 70, but he's aged remarkably well.