diabolically Synonyms

fiendishly devilishly cold-fistedly slenderly callously deucedly viciously lamentably brutishly appallingly imperfectly amateurishly inexpertly inadequately terribly rottenly mercilessly pitilessly very badly ruthlessly pitifully relentlessly hellishly fiercely ferociously ferally execrably deficiently defectively crummily barbarically satanically atrociously wickedly trashily dreadfully dismally direly devilish deplorably demoniacally cruelly corruptly confoundedly brutely brutally bestially barbarously awfully egregiously