drab in WordNet English dictionary

1. causing dejection
   "a blue day"; "the dark days of the war"; "a week of rainy depressing weather"; "a disconsolate winter landscape"; "the first dismal dispiriting days of November"; "a dark gloomy day"; "grim rainy weather"
   blue  dark  dingy  disconsolate  dismal  gloomy  grim  sorry  drab  drear  dreary 
   
2. of a light brownish green color
   olive-drab  drab 
   
3. lacking brightness or color; dull
   "drab faded curtains"; "sober Puritan grey"; "children in somber brown clothes"
   drab  sober  somber  sombre 
   
4. lacking in liveliness or charm or surprise
   "her drab personality"; "life was drab compared with the more exciting life style overseas"; "a series of dreary dinner parties"
   drab  dreary 
   

1. a dull greyish to yellowish or light olive brown
   olive drab  drab