[1] : The Collaborative International Dictionary of English v.0.48

lackluster \lack"lus`ter\, lacklustre \lack"lus`tre\, n.
   a lack of luster.
   1913 webster lackluster

[2] : The Collaborative International Dictionary of English v.0.48

lackluster \lack"lus`ter\, lacklustre \lack"lus`tre\ a.
   1. wanting luster or brightness. "lackluster eye." --shak.
      1913 webster

   2. lacking spirit, liveliness, or enthusiasm; dull.
      pjc

   3. mediocre; as, a lackluster performance.
      pjc

[3] : WordNet (r) 2.0

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
see also:
lacklustre lusterless lustreless 

[4] : Moby Thesaurus II by Grady Ward, 1.0

106 moby thesaurus words for "lackluster":
   absence of color, achromatic, achromaticity, achromatism, achromic,
   anemic, ashen, ashy, betwixt and between, bled white, blind,
   bloodless, cadaverous, chloranemic, colorless, colorlessness, dead,
   deadened, deadly pale, deathly pale, dim, dimmed, dingy,
   discolored, drab, dull, dullness, etiolated, exsanguinated,
   exsanguine, exsanguineous, faded, faint, fair, fair to middling,
   fairish, fairishness, fallow, flat, ghastly, gray, haggard,
   hueless, huelessness, hypochromic, indifference, indifferent,
   insipid, leaden, lifeless, livid, lurid, lusterless, mat, mealy,
   mediocre, mediocreness, mediocrity, medium, middling, middlingness,
   moderate, moderateness, modest, modestness, modesty, muddy, muted,
   namby-pamby, neutral, of a kind, of a sort, of sorts, pale,
   pale as death, pale-faced, pallid, passable, passableness, pasty,
   prosaic, prosy, respectability, respectable, rusty, sallow, sickly,
   so-so, somber, tallow-faced, tarnished, tedious, tediousness,
   tolerable, tolerableness, toneless, tonelessness, uncolored, vapid,
   wan, washed-out, waxen, weak, whey-faced, white, wishy-washy

Lackluster >> L Words
Lackluster, definition of term: Lackluster
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