本領 ほんりょう発揮 はっきじゃなかったです
honryōhakkijanakattadesu

Noun
Desu Copula

The polite, past negative form of 本領発揮

1. Didn't show one's ability.; Didn't perform well.; Didn't live up to potential.

Past/Perfective
Negative
Polite
Casual Register