腕白 わんぱく坊主 ぼうずではありませんでした
wampaku bōzudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 腕白坊主

1. Was not a mischievous child.; Was not a rambunctious young monk.

Past/Perfective
Negative
Polite
Formal Register