Grammar Info

N1 Lesson 1: 4/17


To be worthy of, To be enough, To be sufficient


Verb[る]+ () + Noun
Noun (A) + () + Noun (B)


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About に足る

()る, an う-Verb meaning 'to be sufficient', is often paired with に and either verbs or nouns in order to indicate that something is 'worthy of (A)', or 'enough for (A)'. This is quite a formal grammar structure, so is primarily seen in books, or may be used in speeches.
() will follow verbs in their dictionary form, or nouns. As ()る itself will always appear in the dictionary form, it must be followed by a second noun which it will be modifying as the thing that is or is not worthy of something.
  • (かれ)はこの試合(しあい)()()能力(のうりょく)はないだろう。
    He is probably not worthy to win in this competition.
  • 信頼(しんらい)()友達(ともだち)に、家族(かぞく)のことをすべて(はな)した。
    I told my trustworthy friend everything about my family.
() may come after する, or immediately follow the noun that would usually have する added to it. The primary difference is that () following する will put more emphasis on the action of (A).
  • (なか)はいっぱいにならなかったものの、満足(まんぞく)()(りょう)だった。
    Even though I did not get full, it was enough to satisfy me.
  • (なか)はいっぱいにならなかったものの、満足(まんぞく)する()(りょう)だった。
    Even though I did not get full, it was enough to satisfy me.
When wanting to say that something is 'not worth (A)', () will not appear as に()りない. In these cases, the following verb will need to be negated, not ()る itself.
  • あの先生(せんせい)尊敬(そんけい)()りない先生(せんせい)だと(おも)う。
    I think that teacher is not worthy of respect. (Unnatural Japanese)
  • あの先生(せんせい)尊敬(そんけい)()先生(せんせい)ではないと(おも)う。
    I think that teacher is not worthy of respect.


  • 信頼(しんらい)()友達(ともだち)に、(うで)いい歯医者(はいしゃ)紹介(しょうかい)してもらった。

    A skilled dentist has been introduced to me by a trustworthy friend.

  • 功績(こうせき)から(かんが)えると、その専門分野(せんもんぶんや)では尊敬(そんけい)()研究者(けんきゅうしゃ)だ。

    Judging from his achievements he is a researcher that is worthy of respect in that field.

  • テスラ・モデルSは(かた)()電気(でんき)自動車(じどうしゃ)であり、その技術(ぎじゅつ)世界(せかい)(みと)められる。

    Tesla Model S is an electric car that is worthy of being talked about, and its technology is recognized worldwide.

  • 地検(ちけん):「捜査(そうさ)()くしましたが、起訴(きそ)する()証拠(しょうこ)(つか)むことができませんでした。」

    Public Prosecutor's office: 'We thoroughly investigated, however, we were unable to find enough evidence to prosecute.'

  • これ(おお)くの(ひと)興味(きょうみ)()()ものではない。」

    'This is not enough to interest a lot of people.'

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