stunned vs stupefied

stunned and stupefied both are adjectives.

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

As adjectives, stunned and stupefied are synonyms defined as:

stunned and stupefied: in a state of mental numbness especially as resulting from shock

Other synonyms of stunned include dazed, stupid.

stunned (adjective)	stupefied (adjective)
in a state of mental numbness especially as resulting from shock	in a state of mental numbness especially as resulting from shock
filled with the emotional impact of overwhelming surprise or shock	as if struck dumb with astonishment and surprise
knocked unconscious by a heavy blow