hasten, progress, accelerate, speed up, catalyze, speed, facilitate, avail, dispatch, facilize, more...

delay, slow, hinder, retard

rush, accelerate, hurry, quicken, fast-track, streamline, advance, more...

do not delay,   do quickly,   be done quickly,   accelerate progress,   move things along,   make quickly,   prevent delay,   handle more quickly,   make urgent,   make quick work