THESAURUS
keenly
acerbically, acerbly, acidly, acridly, acrimoniously, actively, animatedly, anxiously, ardently, avidly, bitingly, bitterly, breathlessly, briskly, caustically, con brio, cordially, corrodingly, corrosively, cuttingly, eagerly, energetically, enthusiastically, excitedly, exuberantly, fervently, fervidly, forcefully, forcibly, glowingly, hardly, heart and soul, heartily, heatedly, impassionedly, impatiently, incisively, intensely, kindly, lustily, mordaciously, mordantly, passionately, penetratingly, piercingly, promptly, quickly, rancorously, readily, scathingly, scorchingly, sharply, sorely, spiritedly, stabbingly, strenuously, tartly, trenchantly, vigorously, vivaciously, warmly, with alacrity, with gusto, with open arms, with pep, with relish, with zest, witheringly, zealously, zestfully