がんこいってつ 頑固一徹 LinksSentence search for 頑固一徹Sentence search for がんこいってつKanji details for 頑, 固, 一 and 徹Edit in JMdict Na-adjective (keiyodoshi), Noun1. stubborn; obstinate; adamant; immovableYojijukugo (four character compound) Discussions Log in to talk about this word.