(ろん)をまたない

ろんをまたない
expression
goes without saying; is beyond dispute
1. goes without saying; is beyond dispute; is self-evident
Something is so obviously true that it does not need to be argued or debated. A formal expression used in writing and speeches to assert that a point is indisputable.
健康(けんこう)大切(たいせつ)であることは(ろん)をまたない。
It goes without saying that health is important.
教育(きょういく)重要性(じゅうようせい)(ろん)をまたない。
The importance of education is beyond dispute.
(かれ)功績(こうせき)(おお)きかったことは(ろん)をまたないが、課題(かだい)(のこ)した。
It is beyond dispute that his achievements were significant, but he also left problems behind.
環境(かんきょう)保護(ほご)急務(きゅうむ)であることは(ろん)をまたないところだ。
It is indisputable that environmental protection is an urgent task.

A formal, literary expression meaning something is so obvious it needs no debate. The verb ()つ here means "to require" or "to need," so the expression literally means "does not require debate." Written with hiragana まつ rather than kanji ()つ in most modern usage.

COMMON PATTERNS:

  • 〜ことは(ろん)をまたない: it goes without saying that
  • 〜は(ろん)をまたないところだ: it is indisputable that
  • (ろん)をまたず: without needing to argue (adverbial form)

SIMILAR WORDS:

  • ()うまでもない: needless to say — the everyday equivalent, much more common in conversation
  • (あき)らかだ: is obvious, is clear — simpler and more widely used
  • 自明(じめい)だ: is self-evident — formal, academic
  • (ろん)()たない: alternate kanji spelling using the classical character ()

REGISTER:
Formal to very formal. Used in essays, editorials, speeches, and academic writing. Would sound stiff in casual conversation.