staggeringly

Adverb

1. To a breathtaking degree.
   • The ancient city was staggeringly beautiful.
   • ‘Yes,’ said Slartibartfast, ‘staggeringly dull. Bewilderingly so.[…]’ - 1982 August, Douglas Adams, Life, the Universe and Everything (The Hitchhiker’s Guide to the Galaxy; 3), London: Pan Books, →ISBN, page 111:
   • Barely a bird and definitely none of my target species greeted the morning so I cut my losses and headed north through the staggeringly vast emptiness of the Outback. - 2005, Sean Dooley, The Big Twitch, Sydney: Allen...
2. Moving with a stagger.
   • He made his way staggeringly to the bar.