"drabbest" in the adjective sense
1. drab, dreary
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"
2. drab, sober, somber, sombre
lacking brightness or color dull
"drab faded curtains"
"sober Puritan grey"
"children in somber brown clothes"
3. olive-drab, drab
of a light brownish green color
4. blue, dark, dingy, disconsolate, dismal, gloomy, grim, sorry, drab, drear, dreary
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"
Source: WordNet® (An amazing lexical database of English)
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