ごくつぶしじゃないです
穀潰しじゃないです
gokutsubushijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of ごくつぶし

1. It's not a glutton.; It's not a big eater.

Negative
Polite
Casual Register
Usually Written in Kana