さ
(Sa)
Suffix used to convert adjectives into nouns to indicate degree or quality.
Connection rules
- +い-Adjective (drop い) + さ
- +な-Adjective (drop な) + さ
Examples
1.
富士山の高さは何メートルですか。

Fujisan no taka sa ha nan meetoru desu ka.
What is the height of Mount Fuji in meters?
「A geography quiz.」
2.
日本の夏は暑さだけでなく、湿気もすごいです。

Nippon no natsu ha atsu sa dake de naku, shikke mo sugoi desu.
Japanese summer is not just about the heat, the humidity is also incredible.
「Talking about Tokyo weather.」
Practice
Living alone, I realized the importance of my family.
一人暮らしをして、家族の___が分かりました。
Romaji also accepted