年齢 ねんれい相応 そうおうじゃなかったです
nenrei sō ōja nakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 年齢相応

1. Wasn't age-appropriate.; Didn't seem their age.

Past/Perfective
Negative
Polite
Casual Register