根性 こんじょう きじゃありませんでした
konjōya kija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 根性焼き

1. Was not tenacious/determined.; Was not stubbornly persevering.; Was not self-destructive/reckless.

Past/Perfective
Negative
Polite
Terminal Form