何なんの気きなしに

expression, adverb

unintentionally; casually; without thinking

Describes doing something without particular intent, casually, or as if it were nothing. Often used when someone acts or speaks in a relaxed, offhand manner.

• 何なんの気きなしに言いった言こと葉ばが彼かれを傷きずつけてしまった。

  A remark I made casually ended up hurting him.

• 彼かれは何なんの気きなしに窓まどの外そとを眺ながめていた。

  He was gazing out the window without any particular thought.