[な-adjective] さ-form (nominalization): Meaning and Example Sentences

A conjugation of な-adjectives used to transform adjectives into nouns that express the degree or quality of the adjective.
To form the さ-form, add "さ" to the stem of an な-adjective.

あのレストランの静(しず)かさが気(き)に入(い)った。

I liked how quiet that restaurant was.
会(かい)社(しゃ)で働(はたら)くときに大(だい)事(じ)なのは、まじめさだ。

The important thing when working at a company is being serious.
漢(かん)字(じ)の複(ふく)雑(ざつ)さは、日(に)本(ほん)語(ご)を勉(べん)強(きょう)する人(ひと)たちを困(こま)らせる。

I started living alone and realized how important my family is.
一(ひと)人(り)で住(す)み始(はじ)めて、家(か)族(ぞく)の大(たい)切(せつ)さに気(き)が付(つ)いた。

After I started living alone, I realized how important my family is.
東(とう)京(きょう)の便(べん)利(り)さに慣(な)れているので、田(い)舎(なか)は住(す)みにくいと思(おも)う。

I’m used to the convenience of Tokyo, so I think living in the countryside would be difficult.

さ-form (nominalization)