WordWeb Online

1. Abnormally deficient in colour as suggesting physical or emotional distress
   "the pallid face of the invalid"
   - pale, wan
    
2. (of light) lacking in intensity or brightness; dim or feeble
   "a pallid sky"; "the pallid stars"
   - pale, wan, sick
    
3. Lacking in vitality or interest or effectiveness
   "a pallid performance"
   - pale

Derived forms: pallidest, pallider

See also: colorless [US], colourless [Brit, Cdn], pallidly, pallidness, weak