(adv.) In a swift manner; with quick motion or velocity; fleetly.

PDQ abruptly agilely amain apace at flank speed at once briefly briskly by forced marches cursorily decisively directly double-quick expeditiously fast feverishly flat-out fleetingly flickeringly flittingly for a moment forthwith full tilt furiously hand over fist hand over hand hastily hell for leather hell-bent hell-bent for election helter-skelter hotfoot hurriedly hurry-scurry immediately in a flash in a jiffy in a trice in an instant in double time in double-quick time in high in high gear in no time in passing in seven-league boots instanter instantly lickety-cut lickety-split like a shot like greased lightning momentarily nimbly on the double on the instant on the run on the spot pell-mell post posthaste precipitately pretty damned quick promptly pronto quick quickly rapidly readily right away right off shortly slapdash smartly snappily speedily spryly straightaway straightway subito suddenly summarily superficially transiently trippingly under forced draft unexpectedly whip and spur with a rush with all haste with all speed with dispatch with giant strides with haste with rapid strides with speed without delay without further delay