轩然大波,汉语成语,字面意思是 mountainous waves,比喻大的纠纷或乱子,指不好的影响。可以翻译为a great disturbance1; a big dispute; a crisis等。

例句:

没料到芝麻大的事儿竟会引起如此一场轩然大波。

Who could have thought a trivial matter would cause such a stir?