Kanji 豪 overpowering, great, powerful Related words 頑がん 固こ 頑固 is the most common word for stubbornness; 剛腹 is less frequent and carries a nuance of tough, unyielding spirit, sometimes with a slightly more literary or old-fashioned feel.
意い 地じ っ 張ぱ り 意地っ張り emphasizes being willful or contrary, often over small matters; 剛腹 suggests a deeper, more ingrained obstinacy.
Written forms 剛ごう 腹ふく Usage 71%
Standard kanji spelling; 剛 suggests strength or firmness, 腹 suggests belly/mind.
ごうふく Usage 29%
豪ごう 腹ふく
Variant spelling; 豪 suggests powerful or vigorous, but this form is less common.
Etymology Compound of 剛 (strong, firm) and 腹 (belly, mind), suggesting a 'firm belly/mind' i.e., an unyielding spirit. The exact historical derivation is uncertain.
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