なん なしに
nanno ki nashini

Adverb
Expression

1. unintentionally; inadvertently; calmly; casually; nonchalantly; innocently

なんの なしに っただけで、別 べつ悪気 わるぎがあってのことではありません。
nanno ki nashini ittadakede betsuni warugiga atteno kotodewārimasen.
I just said so without thinking much about it. I didn't mean anything serious.
Other forms: