AN ENGLISH-SPANISH DICTIONARY (GRANADA UNIVERSITY, SPAIN), 14.4
drab1
(adj.) = monótono, soso, aburrido, pesado.
Ex: Have reading foisted on you as a duty, a task to be put up with, from which you expect no delight, and it can appear a drab business gladly to be given up.
drab2
(adj.) = pardusco, gris, deslucido.
Ex: The ride to Central Station first takes you through several drab suburbs, showing none of the picturesque scenes promoted by the tourist office.
drab3
(n.) = puta, prostituta, meretriz, ramera, fulana, putana, zorra, furcia, putilla.
Ex: Prostitutes (whores, strumpets, drabs, harlots) are closely associated with the concepts of dishonesty, hypocrisy, and betrayal.
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* in dribs and drabs = con cuentagotas, poquito a poco, poco a poco.