しらみつぶしじゃありません
虱潰しじゃありません
shiramitsubushijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of しらみつぶし

1. It is not lice crushing.; It's not a trivial matter.

Negative
Polite
Terminal Form
Usually Written in Kana