swiftly Synonyms

fleetly tantivy right away straight off straightaway New York minute chop-chop in short order flat out like crazy like a shot all of a sudden trippingly urgently instantaneously at once unhesitatingly suddenly unexpectedly against the clock all at once like mad meteorologically hurriedly precipitously pronto snappily without delay with all speed at the speed of light at full speed in a trice post haste on the spot on the double in a flash in no time expeditiously at full tilt at speed at the double full tilt in haste like greased lightning swift abruptly fleetingly flittingly forthwith hastily