きっかけでわありませんでした
切っ掛けではありませんでした
kikkakedewārimasendeshita

Noun
Desu Copula

The polite, past negative form of きっかけ

1. Was not the cause.; Was not the opportunity.; Was not the reason.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana