Kanji 徹 penetrate, clear, pierce Related words 頑がん 固こ 頑固 is the most common word for stubbornness and is more broadly used. 一徹 carries a stronger nuance of single-minded determination and is less frequent in everyday speech.
強ごう 情じょう 強情 emphasizes willfulness and refusal to listen, often with a negative tone. 一徹 can imply a principled, unwavering stance.
Word family· 7 stubborn person; diehard
stubborn and short-tempered
staunch devotion to one's master; single-hearted loyalty
stubbornly honest; rigidly upright
rustic and stubborn; boorishly obstinate
Show 2 more Show fewer Written forms 一いっ 徹てつ Usage 99%
Standard kanji spelling; the only written form.
いってつ Usage 1%
Etymology Composed of 一 (one) and 徹 (penetrate, thorough). The combination suggests a single-minded, thoroughgoing persistence. The exact historical derivation is uncertain, but the kanji meaning aligns with the sense of unwavering determination.
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