What is a synonym for the word assent?

Here are some synonyms for "assent," depending on the specific context:

General Agreement:

* Agree

* Consent

* Approve

* Acknowledge

* Concur

* Accept

* Accede

Formal Agreement:

* Sanction

* Ratify

* Authorize

* Endorse

Informal Agreement:

* Go along with

* Say yes

* Be on board

* Give the green light

The best synonym will depend on the specific situation and the desired level of formality.