もんかくつうでわありません
紋殻通ではありません
monka kutsūdewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of もんがらどおし

1. Not proficient in calligraphy.; Not skilled in calligraphy.

Negative
Polite
Formal Register
Usually Written in Kana