The word "proved" refers to the act of demonstrating the truth or validity of something. There are several synonyms to this term that one can use to convey a similar meaning. For instance, the word "validated" refers to the act of determining or confirming the accuracy or truthfulness of something. Similarly, the word "substantiated" means to provide evidence or facts that support a claim or belief. "Confirmed" also indicates that something has been proven to be true or correct. Other synonyms that can be used in place of proved include "attested," "authenticated," "verified," and "justified." All these words are useful and meaningful alternatives to the term "proved," and one can choose depending on the context of the text.