frighteningly - definition and synonyms

adverb 

Your browser doesn’t support HTML5 audio

/ˈfraɪt(ə)nɪŋli/
  1. 1
    in a way that makes you feel afraid or nervous

    The town looked frighteningly unfamiliar in the fog.

  2. 2
    informal used for emphasizing something

    a frighteningly expensive watch