(おもしろ)

おもしろさ
noun
fun; interest; appeal; amusement
1. fun; interest; appeal; amusement
The quality of being interesting, fun, or amusing. Formed by attaching the abstract-noun suffix 〜さ to the い-adjective 面白(おもしろ)い. Refers to the inherent attractiveness or interest-value of something — a book, a sport, an activity, a person's talk.
この(ほん)面白(おもしろ)さが()かった。
I came to understand what makes this book interesting.
(かれ)数学(すうがく)面白(おもしろ)さを(おし)えてくれた。
He taught me how interesting math can be.
この映画(えいが)面白(おもしろ)さは、予想外(よそうがい)展開(てんかい)にある。
The appeal of this movie lies in its unexpected plot twists.

The noun form of 面白(おもしろ)い using the 〜さ suffix, which turns an adjective into an abstract noun for its quality. Used both for "fun" in the everyday sense and "interest / appeal" in a more analytical sense.

COMMON COLLOCATIONS:

  • 面白(おもしろ)さが()かる: to come to appreciate (something's) appeal
  • 面白(おもしろ)さを(つた)える: to convey the appeal of
  • 面白(おもしろ)さに気付(きづ)く: to notice the appeal of
  • ゲームの面白(おもしろ)さ: the fun of the game

SIMILAR WORDS:

  • (たの)しさ: enjoyment; fun — focuses on the emotional pleasure, not analytical interest
  • 興味(きょうみ): interest (in something) — your inclination toward it, not the thing's inherent appeal