godan verb (-u), intransitive verb
nod to each other; nod in mutual agreement
Describes two or more people nodding to each other, often to show mutual understanding or agreement.
彼らは顔を見合わせて、うなずき合った。
They looked at each other and nodded in agreement.
会議で、みんながうなずき合って賛成した
At the meeting, everyone nodded to each other in approval.