What is the antonym word for rebuff?

The antonym for rebuff depends on the specific context, but here are some possibilities:

General Antonyms:

* Accept

* Approve

* Welcome

* Embrace

* Encourage

* Agree

More Specific Antonyms:

* Agree to (if rebuffing a request)

* Compliment (if rebuffing criticism)

* Support (if rebuffing opposition)

* Acknowledge (if rebuffing a gesture)

The best antonym will depend on the specific situation and the intended meaning.