1. To stun; to render senseless, as by a blow.
2. To strike with sudden fear, terror, or wonder; to amaze; to surprise greatly, as with something unaccountable; to confound with some sudden emotion or passion.

1. To stun; to stupefy.
2. To astonish; to strike with amazement; to confound with wonder, surprise, or fear.

ETYM Cf. Old Fren. estonnement, French étonnement.
The feeling that accompanies something extremely surprising; SYN. amazement.

1. Inspiring awe or admiration or wonder; SYN. awe-inspiring, awesome, awful, awing.
2. Surprising greatly; SYN. astonishing.