事ことも無なげに

adverb

casually; nonchalantly; as if nothing happened

Describes acting in a relaxed, unconcerned manner, often when one would expect worry or effort. Can imply doing something difficult with ease or brushing off a serious matter.

• 彼かれは難むずかしい仕し事ごとを事ことも無なげにやってのけた。

  He pulled off the difficult task as if it were nothing.

• 彼かの女じょは失しっ敗ぱいしても事ことも無なげに笑わらっていた。

  Even after failing, she laughed it off nonchalantly.