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土性骨 (doshoubone) Japanese meaning: innate character | Kotomora
じ 字 Furigana
Related words 根こん 性じょう 根性 refers more to willpower or guts, often in a competitive or enduring context, while 土性骨 emphasizes innate moral character or backbone.
気き 骨こつ 気骨 also means backbone or fortitude, but is more formal and literary, often implying principled courage rather than innate nature.
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む
駄だ
だ
。
He's crooked by nature, so it's no use saying anything to him.
That person has a firm character and is unshaken by any hardship.
Written forms 土ど 性しょう 骨ぼね
ateji (phonetic kanji usage)
Standard ateji spelling; the kanji 土性骨 are used phonetically.
ど 性しょう 骨ぼね
Mixed kana-kanji variant; less common but seen in informal writing.
Etymology Formed from the emphatic prefix ど and 性骨(しょうぼね), “innate character, spirit, or backbone.” 土 supplies the conventional spelling of the prefix.