terribly
adverb
ˈterəbli 
ˈterəbli 
1 (especially British English) veryI'm terribly sorry—did I hurt you?It's terribly important for parents to be consistent.I'm not terribly interested in politics.2 very much; very badlyI miss him terribly.They suffered terribly when their son was killed.The experiment went terribly wrong.Would you mind terribly if I didn't come today?