性(せい)

せい
suffix
-ness; -ity; nature; quality
1. -ness; -ity; nature; quality
Suffix indicating a property, quality, or characteristic.
関連(かんれん)性(せい)が高(たか)い。
The relevance is high.
安全(あんぜん)性(せい)を確認(かくにん)する。
I will confirm the safety.
この製品(せいひん)の信頼(しんらい)性(せい)は高(たか)い。
This product's reliability is high.

性(せい) is a suffix indicating quality, property, or characteristic (-ness, -ity).

COMMON COMPOUNDS:

Abstract qualities:

  • 関連(かんれん)性(せい): relevance, relatedness
  • 可能(かのう)性(せい): possibility
  • 必要(ひつよう)性(せい): necessity
  • 重要(じゅうよう)性(せい): importance

Safety/Reliability:

  • 安全(あんぜん)性(せい): safety
  • 信頼(しんらい)性(せい): reliability
  • 危険(きけん)性(せい): danger, riskiness

Other common uses:

  • 独自(どくじ)性(せい): uniqueness
  • 創造(そうぞう)性(せい): creativity
  • 柔軟(じゅうなん)性(せい): flexibility
  • 生産(せいさん)性(せい): productivity

GRAMMAR NOTE:
This suffix is highly productive and can be attached to many na-adjectives and nouns to create abstract quality nouns. Similar to English "-ness" or "-ity."

general
Added 2026.2.4 12:55
09500/09880_sei