おうouじるjiru
1.

To take action in reaction to another person's behavior or request, often in a way that shows acknowledgment or engagement, such as answering a challenge or responding to a question.

2.

To agree to an invitation or proposal, indicating readiness to participate or accept an offer that has been made.

3.

To adapt or modify one's response based on someone else's expectations or needs, fulfilling those requirements in a manner that meets their desires.

4.

To change or transform in relation to varying conditions, such as adjusting the volume of a gas according to pressure changes, or performing duties consistent with one's abilities and the circumstances at hand.

Example:

我々は彼らの要求に応じなければならなかった。