How to stop arranged marriage after engagement

It would depend on what role you play in this. You haven't given us enough info to form a proper response.

Any agreement can be broken if you talk to the people who brokered the agreement. The vital question is what you want the outcome to be. Do you want to be able to talk to everyone after the fact, still be in polite company? Do you care if you burn all your bridges? You can just leave. It takes two people to get married and if one is missing, all the other can do is stand awkwardly at the alter.

What do you want? Why do you want to break off the arranged marriage?

Easiest is not show up at the wedding if nothing else has worked... a wedding usually requires both people to be there.

But as was mentioned... I doubt you are living on your own able to support yourself... and actions have consequences. Also as was asked... the real question is WHY? I think most people at some point get cold feet at some point... even briefly.

In an arranged marriage, the family of the women and family of the man make a agreement. Depending on the culture, there will penalties often to be paid if there is a breach of promise. Also honor is often considered loss by the family of the party breaking the agreement.

In some culture the man can break the agreement more easily than the women.

But assuming you are the bride or groom, you just refuse.

Then depending on where you live, it will depend.
Your family may be angry, they may kick you out of the house. In some places your family may even try to kill you. (yes it really happens)

Chuck is right. Just as the engagement was brokered, so too can the end of the engagement be negotiated.

But, there will be consequences. As everything has been arranged by the respective parties, your future was decided for you.

If it is possible for you to see a lawyer, or perhaps a university counselor, or someone familiar with this marriage practice, that pertains to where you are.

I wish you all the very best of luck.

How to stop arranged marriage after engagement

Go to the ones that arranged it,or the other party of this arrangement.

Consult a local leader of your culture or religion.

Whatever you choose to do, their will/may be consequences for your actions that you should weigh carefully before choosing a path forward.