There are several words that can be used as synonyms for "more asseverated". One word that could be used is "emphasized", which means to give special importance or attention to a particular point. Another synonym could be "asserted", which is similar to asseverated and means to state a fact or belief confidently and forcefully. "Proclaimed" is another option, which means to announce or declare something publicly and formally. "Avowed" is also a possibility, which means to admit or declare openly that one has a particular feeling or quality. Lastly, "affirmed" could be used, meaning to state or assert positively and forcefully.