1. 1〔性質〕one's nature;〔気質〕one's disposition
    • 根性の悪い
    • ill-natured
    • 彼は根性が腐っている
    • He has a mean disposition./He is rotten at heart.
    • 彼は根性の曲がった人だ
    • He is crooked [perverse] by nature.
    • 彼は根性を入れ替えたようだ
    • He seems to 「have changed completely [be quite a different man].
    • 彼はひがみ根性を持っている
    • He is jaundiced./He was born with a chip on his shoulder.
    • 商人根性
    • a mercenary spirit
    • 役人根性
    • a bureaucratic nature
  1. 2〔堅固な意志〕willpower;《口》 guts
    • 根性のある人
    • a man who has guts [plenty of grit]
    • 根性がない
    • have no guts/be weak-willed