Dissuader is a word that means to deter or discourage someone from a particular action or behavior. Some synonyms for dissuade include discourage, deter, hinder, dissuade, debar, prevent, impede, hinder, and discourage. These words all convey the idea of stopping or preventing someone from doing something that may be harmful or unwise. Other synonyms for dissuade may include divert, dissuade, discourage, prevent, and obstruct. In many cases, the best way to dissuade someone from an action is to show them the potential consequences of that action and help them to understand why it may not be in their best interest to proceed.