こけおどしじゃないです
虚仮威しじゃないです
kokeodoshijanaidesu

Noun
Desu Copula
na-Adjective
Negation Auxiliary

The polite negative form of こけおどし

1. It's not just a show.; It's not bluffing.

Negative
Polite
Casual Register
Usually Written in Kana