We found 2 dictionaries that define the word look one's age:

General (2 matching dictionaries)

1. look one's age: Oxford Learner's Dictionaries
2. look one's age: Wiktionary

Definitions from Wiktionary (look one's age) ▸ verb:  To look as old as one actually is. ▸ Words similar to look one's age ▸ Usage examples for look one's age ▸ Idioms related to look one's age ▸ Wikipedia articles (New!) ▸ Words that often appear near look one's age ▸ Rhymes of look one's age ▸ Invented words related to look one's age