本領 ほんりょう発揮 はっきじゃありませんでした
honryōhakkijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 本領発揮

1. Wasn't able to fully demonstrate my ability.; Didn't show what I was capable of.

Past/Perfective
Negative
Polite
Terminal Form