The phrase "more testatory" means more assertive or forceful in expressing one's opinion, beliefs or feelings. Synonyms for the word "more testatory" includes the following: more emphatic, more insistent, more decisive, more resolute, more zealous, more fervent, more passionate, more ardent, more determined and more unwavering. These words connote a sense of strong conviction and confidence in expressing oneself. The use of these synonyms can help to add depth and nuance to one's language and to convey a more powerful message. Whether in written or spoken form, an assertive tone can make all the difference in getting your point across effectively.