ほんごしい 本腰を入れる Show inflections LinksSentence search for 本腰を入れるSentence search for ほんごしをいれるKanji details for 本, 腰 and 入Edit in JMdict Expressions (phrases, clauses, etc.), Ichidan verb1. to set about in earnest; to make a strenuous effort; to put one's back into (doing) Discussions Log in to talk about this word.