性せい

noun

nature; character; disposition

Refers to a person's innate character or temperament. Often used in fixed expressions like 性に合う (suits one's nature).

• 彼かれは性せいに合あわない仕し事ごとを辞やめた。

  He quit the job that didn't suit his nature.

noun

sex; gender; sexuality

Covers biological sex, gender identity, and sexual activity/attraction. Context distinguishes the specific meaning.

• 応おう募ぼ書しょ類るいに性せいを記き入にゅうしてください。

  Please fill in your sex on the application form.

• 性せいについての教きょう育いくは重じゅう要ようだ。

  Education about sex is important.

noun

gender (grammar)

Grammatical gender, as in masculine, feminine, or neuter. Technical use in linguistics.

• ドイツ語ごの名めい詞しには性せいがある。

  German nouns have grammatical gender.

noun, used as a suffix

-ty; -ity; -ness; -cy

Suffix indicating a quality or condition. Attaches to nouns or adjectival stems to form abstract nouns, e.g., 可能性 (possibility), 安全性 (safety).

• この製せい品ひんの安あん全ぜん性せいは確かく認にん済ずみです。

  The safety of this product has been confirmed.

• 彼かれの可か能のう性せいを信しんじている。

  I believe in his potential.