真面目(まじめ)さ

まじめさ
noun
seriousness; earnestness; diligence
personality
1. seriousness; earnestness; diligence
The quality of being serious, honest, and hardworking. Formed by adding the nominalizing suffix さ to the na-adjective 真面目. Generally positive, highlighting reliability and conscientiousness.
彼(かれ)の真面目(まじめ)さは信頼(しんらい)できる。
His seriousness is trustworthy.
真面目(まじめ)さだけでは成功(せいこう)できない。
You can't succeed on earnestness alone.
仕事(しごと)に対(たい)する真面目(まじめ)さが認(みと)められて昇進(しょうしん)した。
Her diligence toward work was recognized and she was promoted.

Formed from 真面目(まじめ) (serious, earnest) + さ (nominalizer that turns adjectives into abstract nouns expressing degree or quality). This is a productive pattern in Japanese: 優(やさ)しさ (gentleness), 強(つよ)さ (strength), etc.

Common collocations

Similar words

  • 誠実(せいじつ)さ: sincerity, integrity — broader moral quality; emphasizes honesty and trustworthiness
  • 勤勉(きんべん)さ: diligence, industriousness — focuses specifically on hard work and study
  • 真剣(しんけん)さ: seriousness, intensity — emphasizes being serious about a specific task or situation
general
Added 2026.4.9 4:26 · Revised 2026.9.2 13:02
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