staggering vs stupefying

staggering and stupefying both are adjectives.

Word	Noun	Adjective	Verb	Adverb
staggering	No	Yes	No	No
stupefying	No	Yes	No	No

As adjectives, staggering and stupefying are synonyms defined as:

staggering and stupefying: so surprisingly impressive as to stun or overwhelm

Other synonyms of staggering include astonishing, astounding.

staggering (adjective)	stupefying (adjective)
so surprisingly impressive as to stun or overwhelm	shocking with surprise and consternation
	making physically stupid or dull or insensible
	so surprisingly impressive as to stun or overwhelm