come se nulla fosse

まるで大したことではないかのように、まるで何も起こらなかったかのように、ただそのように、瞬きもせずに

English Meaning

as if it were no big deal; as if nothing had happened; just like that; without batting an eyelid

Quando ha rotto il vaso, ha continuato a parlare come se nulla fosse.

花瓶を割ったときも、彼はまるで大したことではないかのように話し続けた。

When he broke the vase, he kept talking as if it were no big deal.