The word "seismically" is often used to describe something related to earthquakes or seismic events. However, there are several synonyms for "seismically" that can also convey the same meaning. These include "earthshakingly," "tremorously," "quake-inducing," and "ground-shattering." "Cataclysmic," "devastating," and "disruptive" are other synonyms that can describe the significant impact of a seismic event. Additionally, "jarring," "turbulent," and "volatile" can be used to describe the intense and sudden nature of earthquakes. Overall, there are several synonyms for "seismically" that can be used to convey the power and impact of seismic events.