- Shock or greatly surprise: her bluntness astounded himMore example sentences
amaze, astonish, stagger, surprise, startle, stun, confound, dumbfound, stupefy, daze, nonplus; throw, shake, unnerve, disconcert, discompose, bewilder; take someone's breath away, take by surprise, take aback, shake up, stop someone in their tracks, strike dumb, leave open-mouthed, leave aghast, catch off balance• informal flabbergast, floor, knock for six, knock someone sideways, knock out, knock the stuffing out of, bowl over, blow someone's mind, blow away
- 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.
Middle English (as an adjective in the sense 'stunned'): from astoned, past participle of obsolete astone (see astonish).