素人 しろうと細工 さいくじゃありませんでした
shirōtosaikujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 素人細工

1. It wasn't amateur work.; It wasn't a DIY job.; It wasn't unskilled work.

Past/Perfective
Negative
Polite
Terminal Form