An ordinary, unexciting thing can be called mundane: "Superman hid his heroic feats by posing as his mundane alter ego, Clark Kent."

Mundane, from the Latin word mundus, "world," originally referred to things on earth. Such things were supposed to be uninteresting when compared to the delights of Heaven; hence the word's present meaning. Writing about reality TV shows, a Newsweek writer opined, "In reality bizarro-world, the mundane is presented as the spectacular" — in other words, people's everyday routines are now televised as entertainment.

Definitions of mundane

adj found in the ordinary course of events

everyday, quotidian, routine, unremarkable, workaday
not exceptional in any way especially in quality or ability or size or degree

adj concerned with the world or worldly matters

mundane affairs”
secular, temporal, worldly
characteristic of or devoted to the temporal world as opposed to the spiritual world

adj belonging to this earth or world; not ideal or heavenly

“yet a mundane wonder of unimagined kind”
of or belonging to or characteristic of this earth as distinguished from heaven

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