不ふ撓とう不ふ屈くつふとうふくつじ字FuriganaMeanings1noun, noun which may take the genitive case particle 'no'tenacity; indomitability; unyielding spirityojijukugo (four-character idiom)›A yojijukugo describing a strong will that never bends or breaks, used in formal or literary contexts to praise perseverance.彼かれの不