ごくつぶしじゃありません
穀潰しじゃありません
gokutsubushijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of ごくつぶし

1. It is not grain-crushing.; It's not a waste.; It's not pointless.

Negative
Polite
Terminal Form
Usually Written in Kana