Synonyms for Astonishingly:

adv

surprisingly (adverb)
suddenly, surprisingly, astoundingly, shockingly, startlingly, unexpectedly.

adv.

strangely (adverb)
startlingly, amazingly.
surprisingly (adverb)
suddenly, surprisingly, astoundingly, shockingly, startlingly, unexpectedly.
very (adverb)
surprisingly.

n.

astonishingly (noun)
surprisingly, amazingly.

Other synonyms:

amazingly
amazingly.
Other relevant words:
astoundingly, amazingly.

Usage examples for astonishingly

  1. It is astonishingly good. – Kent Knowles: Quahaug by Joseph C. Lincoln
  2. Within a short time the convoy officers acquired an astonishingly intimate knowledge of these boats and the habits of their commanders. – The Victory At Sea by William Sowden Sims Burton J. Hendrick
  3. It seemed astonishingly big to them, now that they were so small; but Chubbins remarked that this fact was a pleasant one, for instead of eating all the good things the basket contained at one meal, as they had at first intended, it would furnish them with food for many days to come. – Policeman Bluejay by L. Frank Baum