Definition of 二十代 (にじゅうだい)
にじゅうだい
                        二十代
にじゅうだい
nijuudai
noun
•
        
one's twenties
Related Kanji
| 二 | two, two radical (no. 7) | 
| 十 | ten | 
| 代 | substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee |