1. (adv.) Immediately; without delay; directly.

2. (adv.) As soon as the thing required may be done by reasonable exertion confined to that object.

PDQ abruptly all at once all together apace at a blow at a stroke at once at one blow at one jump at one stroke at one swoop at one time away decisively directly expeditiously immediately in a hurry in no time instanter instantly now on the instant on the spot per saltum pretty damned quick promptly pronto quickly right away right now right off simultaneously smartly speedily straightaway straightway subito sudden suddenly summarily swiftly then and there this minute this very minute uno saltu with all speed without delay without further delay