Keenly

Adverb

 * 1) In a keen manner.

Thesaurus
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