とっぱこうひら 突破口を開く Show inflections LinksSentence search for 突破口を開くSentence search for とっぱこうをひらくKanji details for 突, 破, 口 and 開Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to make a breakthrough; to break ground Discussions Log in to talk about this word.