幼若 ようじゃく 反応 はんのうじゃありませんでした
yōjakuka hannōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 幼若化反応

1. Was not rejuvenation reaction.; Was not a youthful transformation.

Past/Perfective
Negative
Polite
Terminal Form