1. (adj)olive drab, drab a dull greyish to yellowish or lightolivebrown
2. (adj)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"
3. (adj)drab, sober, somber, sombre lacking brightness or color; dull "drab faded curtains"; "sober Puritan grey"; "children in somber brown clothes"
4. (adj)olive-drab, drab of a light brownish green color
5. (adj)blue, dark, dingy, disconsolate, dismal, gloomy, grim, sorry, drab, drear, dreary causingdejection "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"