れっこじゃありませんでした
narekkojārimasendeshita

Noun
Desu Copula
na-Adjective
no-Adjective

The polite, past negative form of 慣れっこ

1. Was not accustomed to it.; Was not used to it.; Was not familiar with it.

Past/Perfective
Negative
Polite
Terminal Form