daft [dafter -comp., daftest -sup.]

(adj.) = estúpido, loco, bobo, bobalicón, sonado, alelado, abobado, gili, gilipuertas, lelo, ido, panoli
Ex: Ranking among the dafter exercises sometimes imposed on children is the one that requires them to describe a screwdriver or a vase or the desks they sit at, or any familiar object.
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* as daft as a brush = tonto del bote, tonto de remate, tonto del culo, tonto perdido, chiflado perdido, chalado perdido, no tener dos dedos de frente, tener pocas luces, más corto que las mangas de un chaleco