騎虎の勢い
きこのいきおい Idiom- 1having no choice but to carry on ; having no choice but to go on ; being unable to change one's course of action ; (with the) momentum of (a man) riding a tiger Translated by Jiyomi
expressions (phrases, clauses, etc.) · noun (common) (futsuumeishi)
JMdict entry 2588130. Source and licence.