きっかけじゃなかったです
切っ掛けじゃなかったです
kikkakejanakattadesu

Noun
Desu Copula

The polite, past negative form of きっかけ

1. Wasn't the cause.; Wasn't the opportunity.; Wasn't the reason.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana