Synonyms for vigorously

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.