amaze, astound, bewilder, confound, daze, dumbfound, knock senseless, numb, shock, stagger, stun
English Collins Dictionary - English synonyms & Thesaurus
stupefy ( stupefies 3rd person present) ( stupefying present participle) ( stupefied past tense & past participle ) If something stupefies you, it shocks or surprises you so much that you cannot think properly for a while.
...a violent slap on the side of the head, which stunned and stupefied him. V n
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