terribly
adverb
1 she's terribly upset | that's terribly good of you:
very, extremely, awfully, dreadfully, really, frightfully, exceptionally, exceedingly, immensely, thoroughly, uncommonly, remarkably, eminently, extraordinarily, incredibly, most, positively, decidedly, downright;
heartily, profoundly;
Scottish unco;
North American quite;
informal terrifically, tremendously, fearfully, desperately, seriously, devilishly, hugely, fantastically, madly, ultra, too … for words, mucho, mega, majorly, oh-so, stinking;
British, informal jolly, ever so, dead, well, fair, right;
North American, informal real, mighty, awful, plumb, powerful, way, bitching;
South African, informal lekker;
informal , dated devilish;
archaic exceeding, sore.