1. 1〔根気〕
    • 根をつめて勉強する
    • concentrate on studying/put all one's efforts into one's studies
    • 最近根が続かなくなった
    • Recently I haven't had any stamina [drive/《口》 stick-to-itiveness]./Recently I've lost all my energy.
  1. 2〔数学で〕a root
    • 重根
    • a multiple root
  1. 3〔化学で〕a radical ⇒き(基)
  1. I
  1. 1〔植物の〕a root
    • 挿し木の根がついた
    • The cuttings have taken root.
    • 雑草を根から抜く
    • uproot weeds/pull out weeds by the roots
  1. 2〔物の根元〕
    • 毛髪の根
    • the root of a hair
    • はれものの根
    • the core of a boil
  1. II
  1. 1〔根源〕the source; the origin; the root
    • 病気[悪]の根を絶つ
    • eradicate [root out] the causes of disease [evil]
    • この問題の根は深い
    • This is a deep-rooted problem./〔簡単には片付かない〕This problem cannot be solved so easily.
  1. 2〔生まれつきの性質〕nature
    • 根はやさしい人だ
    • He is kind at heart.
    • 彼は根っからの商人だ
    • He is a born [true] merchant [businessman]./He was born to be a merchant.
  1. 根が生える根を下ろす
    • 根が生えたように動かなかった
    • He was rooted to the spot.
    • 彼は僕のことを根に持っている
    • He has a grudge against me.
  1. 根掘り葉掘り根掘り葉掘り
    • 根も葉もない噂
    • a groundless rumor
    • 根も葉もない理由で首にされた
    • I was dismissed for reasons not grounded in fact.
    • キリスト教はその国の国民に深く根をおろしている
    • Christianity hasbecome deeply rooted [put down deep roots] among the people in that country.
    • 民主主義がこの国に本当に根を下ろしたのだろうか
    • Has democracy really taken root in this country?