Reasoning with someone is a crucial part of communication, and there are various synonyms that can be used in place of the phrase "reason with." For example, you can "convince" someone, which means to persuade them to believe or do something. You can also "discuss" with them, which means to talk about something with the intention of coming to an agreement or understanding. Additionally, you can "negotiate" with someone, which involves compromising in order to reach a mutual agreement. Other synonyms for "reason with" include "debate," "persuade," "counsel," and "advise." Ultimately, the key to successful communication lies in choosing the right words to express your thoughts and ideas effectively.