lustreless

1. The early autumn was lustreless and slack.
   初秋的日子是黯淡、萧条的。
2. Palpitation, lustreless, complexion, dizziness, blurring of vision, shortness of breath, lassitude, pale tongue with tooth prints, thready, weak or intermittent pulse.
   心悸不宁，面色无华，头晕目眩，气短乏力，舌质淡，有齿痕，脉细数或结代。

adj

1. lacking luster or shine
   1. staring with lackluster eyes
   2. lusterless hair

   Synonym:    lacklusterlacklustrelusterless

2. lacking brilliance or vitality
   1. a dull lackluster life
   2. a lusterless performance

   Synonym:    lacklusterlacklustrelusterless