Definition of astound in English:

astound

Syllabification: as·tound
Pronunciation: /əˈstound
 
/

verb

[with object]
Shock or greatly surprise: her bluntness astounded him
More example sentences
  • They astound the audience with their skill and technique in throwing the device around and manoeuvring it on the string.
  • Her capacity for stupidity has surprised her in the past, but now it astounds her.
  • She astounds us all - we just look at her in absolute amazement.
Synonyms
amaze, astonish, stagger, surprise, startle, stun, confound, dumbfound, boggle, stupefy, shock, daze, take aback, leave open-mouthed, leave aghast
informal flabbergast, blow away, bowl over, floor

Origin

Middle English (as an adjective in the sense 'stunned'): from astoned, past participle of obsolete astone (see astonish).

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