At once ( Informal ) (6)
I believe the answer is:
pronto
(Other definitions for pronto that I've seen before include "Proton (anag.)" , "Quickly, immediately" , "Promptly, without delay" , "Double quick!" , "Italian telephonic greeting" .)
I believe the answer is:
pronto
(Other definitions for pronto that I've seen before include "Proton (anag.)" , "Quickly, immediately" , "Promptly, without delay" , "Double quick!" , "Italian telephonic greeting" .)