Synonyms and related words :
ardently, demonically, desperately, doggedly, energetically, enthusiastically, fanatically, fervently, fervidly, feverishly, fiercely, frantically, frenetically, furiously, glowingly, heatedly, intensively, like mad, like one possessed, madly, passionately, persistently, severely, uncontrollably, violently, warmly, wildly, zealously