- Surprise or impress (someone) greatly: you never fail to astonish me [with object and clause]: it astonished her that Mrs. Browning could seem so anxiousMore example sentences
amaze, astound, stagger, surprise, startle, stun, confound, dumbfound, strike dumb, boggle, stupefy, daze, shock, take aback, leave open-mouthed, leave aghast• informal flabbergast, blow away, bowl over, floorsurprised, startled, stunned, thunderstruck, aghast, taken aback, dumbfounded, dumbstruck, stupefied, dazed, awestruck• informal flabbergasted, floored, blown awayamazing, astounding, staggering, surprising, breathtaking; remarkable, extraordinary, incredible, unbelievable, phenomenal• informal mind-boggling
- The results were startling as astonished friends saw him ride a bicycle for the first time in two years.
- It has never failed to astonish me how we pale-faced Scots continue to swallow the propaganda that down here in deepest England the weather is somehow better.
- It came as no surprise to me, and probably will not astonish anyone else, that today I felt the after-effects of yesterday's long drive to and from Nottingham.
early 16th century (as astonished, in the sense 'stunned, bewildered, dismayed'): from obsolete astone 'stun, stupefy', from Old French estoner, based on Latin ex- 'out' + tonare 'to thunder'.