The phrase "more earthshaking" implies something that has a significant and profound impact. However, there are antonyms or opposite words that can convey the opposite meaning, such as "insignificant," "inconsequential," "trivial," "meaningless," "unimportant," "mundane," or "ordinary." These can refer to events, ideas, or actions that lack the disruptive effect or the transformative power of something that is earthshaking. Therefore, depending on the context, using antonyms for "more earthshaking" can contribute to creating a nuanced and accurate description of the situation or the phenomenon under discussion.