vigorously
modif.
energetically, alertly, eagerly, quickly, nimbly, agilely, strenuously, resolutely, firmly, forcibly, forcefully, urgently, unfalteringly, purposefully, actively, boldly, adventurously, zealously, lustily, vibrantly, robustly, stoutly, hardily, wholeheartedly, earnestly, warmly, fervidly, passionately, sincerely, devoutly, appreciatively, with heart and soul, healthily, fearlessly, intrepidly, mightily, decidedly, by brute force, to good account, like blazes*; see also powerfully.
Antonyms calmly*, aimlessly, slowly.