Definition of astoundingly in English:

astoundingly

adverb

  • 1Surprisingly impressively or notably:

    ‘both cars handle competently and precisely, if not astoundingly’
    [as submodifier] ‘an astoundingly good performance’
    1. 1.1[sentence adverb] Used to express surprise at a situation or event:
      ‘astoundingly, even after all these centuries something of his effort survives’

Pronunciation

astoundingly

/əˈstaʊndɪŋli/