WordWeb Online

1. Thickly covered with ingrained dirt or soot
   "dingy linen";
   - begrimed, grimy, grubby [informal], grungy, raunchy [US, informal], manky [Brit, informal], scungy [Austral, NZ, informal]
    
2. (of colour) discoloured by impurities; not bright and clear
   "a dingy white";
   - dirty, muddied, muddy
    
3. Causing dejection
   "a dingy day";
   - blue [informal], dark, disconsolate, dismal, gloomy, grim, sorry, drab, drear, dreary

Derived forms: dingiest, dingier

See also: cheerless, depressing, dirty, impure, soiled, uncheerful, unclean

Encyclopedia: Dingy, West Virginia