swiftly

adv.

[1]

fleetly , fast , quickly , speedily , rapidly , expeditiously , briskly , hurriedly , hastily , suddenly , abruptly , in a flash , in a trice , in the wink of an eye , before you can say 'Jack Robinson' , before you can say 'knife' , like a shot , in an instant , in (less than) no time , precipitately , unexpectedly , (Colloq) like greased lightning , (US) lickety-split , in a jiffy , (Slang) pronto , like a bat out of hell