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Synonyms for Mundane (same or very similar meaning)

WordNet sense 1 (concerned with the world or worldly matters):
terrestrial

WordNet sense 2 (characteristic of or devoted to the temporal world):
worldly

WordNet sense 3 (found in the ordinary course of events):
everyday, quotidian, routine, unremarkable, workaday

WordNet sense 4 (not exceptional in any way especially in quality or ability or size or degree):
ordinary

WordNet sense 5 (belonging to this earth or world; not ideal or heavenly):
terrene

WordNet sense 6 (of or belonging to or characteristic of this earth as distinguished from heaven):
earthly


From the ODE community, based on WordNetadd/edit