十二分 じゅうにぶんじゃありませんでした
jūnibunjārimasendeshita

Noun
Desu Copula
na-Adjective
no-Adjective

The polite, past negative form of 十二分

1. It wasn't twelve o'clock.; It wasn't fully twelve o'clock.

Past/Perfective
Negative
Polite
Terminal Form