dumbstruck vs stupefied

dumbstruck and stupefied both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dumbstruck	No	Yes	No	No
stupefied	No	Yes	No	No

As adjectives, dumbstruck and stupefied are synonyms defined as:

dumbstruck and stupefied: as if struck dumb with astonishment and surprise

Other synonyms of dumbstruck include dumbfounded, dumbstricken, dumfounded, flabbergasted, thunderstruck.

dumbstruck (adjective)	stupefied (adjective)
as if struck dumb with astonishment and surprise	in a state of mental numbness especially as resulting from shock
	as if struck dumb with astonishment and surprise