See lusterless in Webster's New World Roget's A-Z Thesaurus II
adjective
Lacking gloss and luster:
dim, dull, flat, lackluster, mat. See lightLacking liveliness, charm, or surprise:
arid, aseptic, colorless, drab, dry, dull, earthbound, flat, flavorless, lackluster, lifeless, matter-of-fact, pedestrian, prosaic, spiritless, sterile, stodgy, unimaginative, uninspired. See excite
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