90きゅうじゅう代だい

noun

one's 90s; nineties

Refers to the age range 90–99, or the decade of the 1990s depending on context. Commonly used with possessive or attributive phrases.

• 祖そ父ふは90代だいでも毎まい日にち散さん歩ぽしている。

  My grandfather, even in his 90s, takes a walk every day.

• 90代だいの女じょ性せいが一人ひとりで旅りょ行こうするのは珍めずらしい。

  It's rare for a woman in her 90s to travel alone.