無駄骨 むだぼね りじゃありませんでした
mudaboneorijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 無駄骨折り

1. It wasn't in vain.; It wasn't fruitless.; It wasn't a waste of effort.

Past/Perfective
Negative
Polite
Terminal Form