adv. 25B6; adverb
(informal) she's terribly upset : VERY, extremely, really, terrifically, tremendously, immensely, thoroughly, dreadfully, exceptionally, remarkably, extraordinarily, exceedingly; N. English right; informal awfully, devilishly, seriously, majorly; Brit. informal jolly, ever so, dead, well; N. Amer. informal real, mighty, awful; informal, dated frightfully; archaic exceeding.
he played terribly : VERY BADLY, atrociously, awfully, dreadfully, appallingly, execrably; informal abysmally, pitifully, diabolically.
(informal) I shall miss you terribly : VERY MUCH, greatly, a great deal, a lot; informal loads.