ほんごし
strenuous effort; earnestness; seriousness
Common word
Noun
俺おれは慌あわてて探さがし物ものに本腰ほんごしを入いれ始はじめた。
I hurriedly started searching in earnest.
さて、本腰ほんごしを入いれてまじめな話はなしをしよう。
Now let us get down to a serious talk.