dumbstricken vs flabbergasted

dumbstricken and flabbergasted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dumbstricken	No	Yes	No	No
flabbergasted	No	Yes	No	No

As adjectives, dumbstricken and flabbergasted are synonyms defined as:

dumbstricken and flabbergasted: as if struck dumb with astonishment and surprise

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

dumbstricken (adjective)	flabbergasted (adjective)
as if struck dumb with astonishment and surprise	as if struck dumb with astonishment and surprise