资料来源 : pyDict

可怕地;非常地

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Frightfully \Fright"ful*ly\, adv.
   In a frightful manner; to a frightful dagree.

资料来源 : WordNet®

frightfully
     adv : used as intensifiers; "terribly interesting"; "I'm awful
           sorry" [syn: {terribly}, {awfully}, {awful}]