The antonyms for the word "more pestilent" would be "less harmful," "less toxic," "less deadly," "less infectious," "less contagious," or "less virulent." Pestilence refers to a deadly and highly infectious disease that spreads rapidly causing epidemic or pandemic. Hence, the opposite of this word would be something that is less dangerous and unlikely to cause harm. Using the antonyms of "more pestilent" can help convey a positive or less ominous tone or to describe a situation where the negative consequences are minimized or non-existent. Thus, incorporating antonyms of "more pestilent" can add clarity and variation to language, emphasizing the importance of choosing the right words.