fearfully
adverb
1 she opened the door fearfully:
apprehensively, uneasily, nervously, timidly, timorously, diffidently, hesitantly;
with apprehension/trepidation, with bated breath, with one's heart in one's mouth.
2 informal Stephanie looked fearfully glamorous:
extremely, exceedingly, exceptionally, remarkably, uncommonly, extraordinarily, incredibly, most, very, really, immensely, thoroughly, positively, decidedly, downright;
Scottish unco;
North American quite;
informal tremendously, awfully, terribly, frightfully, dreadfully, terrifically, desperately, seriously, devilishly, hugely, fantastically, madly, ultra, too … for words, mucho, mega, majorly, oh-so;
British, informal jolly, ever so, dead, well, fair, right;
North American, informal real, mighty, awful, plumb, powerful, way;
South African, informal lekker;
informal , dated devilish, hellish, frightfully;
archaic exceeding.