verb

(especially of an emotional or physical shock) make (someone) unable to think or react properly.

she was dazed by his revelations

stun,stupefy,knock senseless,knock unconscious,knock out,lay out,knock for six,knock the stuffing out of,astound,amaze,astonish,startle,take someone’s breath away,dumbfound,overwhelm,overcome,overpower,devastate,dismay,disconcert,stagger,shock,confound,bewilder,take aback,nonplus,shake up,flabbergast,knock sideways,hit like a ton of bricks,bowl over,floor,blow away