frightfully

From frightful +‎ -ly.

• (Received Pronunciation) IPA^(key): /ˈfɹaɪtfəli/, /ˈfɹaɪtfli/, /-ɪ/
• (General American) IPA^(key): /ˈfɹaɪtfəli/

• Audio (US):

  (file)

• Rhymes: -aɪtfəli

frightfully (comparative more frightfully, superlative most frightfully)

1. In a frightful manner.
2. Very, extremely.

   It all went frightfully quickly.

   • 1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, →OCLC, page 199:

     "Really!" he said, collapsing into lassitude. "It's too frightfully hot for singing."