accomplished rapidly and without delay; "was quick to make friends"; "his quick reaction prevented an accident"; "hoped for a speedy resolution of the problem"; "a speedy recovery"; "he has a right to a speedy trial"
4
fast
acting or moving or capable of acting or moving quickly; "fast film"; "on the fast track in school"; "set a fast pace"; "a fast car"
2
potent
having a strong physiological or chemical effect; "a potent toxin"; "potent liquor"; "a potent cup of tea"
