absent-mindedly

うっかりうなずく

To move your head down and then up, without being aware of what you are doing, often as a sign of agreement or acknowledgement.

同意や承認のしるしとして、何をしているか意識せずに頭を上下に動かすこと。

何気なく撫でる

To move your hand gently over a surface, such as hair, fur, or your own chin, without being aware of what you are doing.

髪、毛皮、または自分のあごなどの表面を、何をしているか意識せずに手で優しくなでること。

何気なくはじく

To make a quick, light movement with a part of the body, without being aware of what you are doing.

何をしているか意識せずに、体の一部で素早く軽い動きをすること。