相槌

nounあいづち · aizuchi

1. Englishaizuchi; backchanneling; interjections indicating that one is paying attention

   • かくかくしかじかで、と事情を説明したのだが、あんまり興味なさそうな相槌しか返ってこなかった。I explained the situation, as this, that and such and such, but they just nodded along without showing much interest.

2. Englishtwo smiths hammering at an object in turn

Source: JMdict (EDRDG) · CC BY-SA 4.0 (EDRDG)