lack·lus·ter /ˈlækˌlʌstɚ/
(a.)無光澤的;無神的
Lack·lus·ter, Lack·lus·tre n. A lack of luster.
Lack·lus·ter, Lack·lus·tre a.
1. Wanting luster or brightness. “Lackluster eye.”
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lackluster
adj 1: lacking brilliance or vitality; "a dull lackluster life"; "a
lusterless performance" [syn: lacklustre, lusterless,
lustreless]
2: lacking luster or shine; "staring with lackluster eyes";
"lusterless hair" [syn: lacklustre, lusterless, lustreless]