(せいとうせい)

せいとうせい
noun
legitimacy; justification; validity
1. legitimacy; rightfulness; justification
The quality of being morally right, logically justified, or socially acceptable. Often used when questioning or asserting whether an action, decision, or claim is properly grounded.
正当性(せいとうせい)主張(しゅちょう)する。
To assert legitimacy.
その決定(けってい)正当性(せいとうせい)()われている。
The legitimacy of that decision is being questioned.
自分(じぶん)行動(こうどう)正当性(せいとうせい)があると(しん)じているからこそ、(つよ)主張(しゅちょう)できる。
It is precisely because you believe your actions are justified that you can argue your case confidently.

Formed from 正当(せいとう) (legitimate, justified) + (せい) (-ness). Used in formal and academic discourse to discuss whether actions or claims are morally or logically sound.

COMMON COLLOCATIONS:

  • 正当性(せいとうせい)()う — to question the legitimacy of
  • 正当性(せいとうせい)証明(しょうめい)する — to prove justification
  • 正当性(せいとうせい)()く — to lack legitimacy

SIMILAR WORDS:

  • 妥当性(だとうせい): validity, reasonableness (whether something is sensible/appropriate)
  • 合法性(ごうほうせい): legality (whether something is permitted by law)
  • 正統性(せいとうせい): legitimate succession (same pronunciation; refers to rightful authority by lineage or tradition)