"Illustrous" is a word in ENGLISH

illustrous ENGLISH
Definition:

Without luster.

Few words of positivity

The values we rightly associate with the modern age - the "liberty, equality, and fraternity" of the French revolution - are all endangered today not by the dead hand of tradition but by modernity itself, and they can be salvaged only by moving beyond it.

Harvey Cox, Religion in the Secular City: Toward a Postmodern Theology

WORD SUGGESTIONS
Laugh your heart out.

Salesman: This jug is genuine Indian pottery.Customer: But it says "Made in Cleveland."Salesman: Haven't you ever heard of the Cleveland Indians?

earthy ENGLISH

Without luster, or dull and roughish to the touch; as, an earthy fracture.

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naif ENGLISH

Having a true natural luster without being cut; -- applied by jewelers to a precious stone.

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