〜さ
〜さ means -ness; degree of. It is a JLPT N4 grammar point. This attaches to the stem of an adjective and turns the quality or degree into a noun. It is used in words like 「高さ」, 「重さ」, and 「楽しさ」 to talk about height, weight, feelings, and similar ideas.
Japanese sources describe it as 「〜の程度、〜さ」.
〜さ examples
この山の高さは千メートルです。
The height of this mountain is one thousand meters.
旅行の楽しさを知りました。
I learned how enjoyable travel is.
〜さ exercises
Pick what belongs in the parentheses. The answer is marked below.
このかばんの重（ ）はどのくらいですか。
- さ ✓
- い
- く
- がり
How heavy is this bag?
日本語の楽し（ ）がわかりました。
- い
- さ ✓
- く
- みたい
I understood the fun of Japanese.
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