Synonyms and related words :
actively, alertly, boldly, briskly, dynamically, eagerly, energetically, firmly, forcefully, forcibly, hammer and tongs, hardily, hardly, heartily, like crazy, like mad, lustily, might and main, mightily, powerfully, purposefully, resolutely, robustly, spiritedly, stalwartly, strenuously, strongly, unfalteringly, vivaciously, with a vengeance, zealously