Synonyms of terrifically

1 Syllable
right, so, real
2 Syllables
highly, really, oddly, mighty, extra, awful, plenty, very
3 Syllables
curiously, strangely, rarely, awfully, almighty, powerful, terribly, uncommon
4 Syllables
especially, uncommonly, remarkably, surprisingly, extremely, decidedly, unusually, peculiarly
6 Syllables
extraordinarily, prohibitively