nonplus vs stupefy

nonplus and stupefy both are verbs.

Word	Noun	Adjective	Verb	Adverb
nonplus	No	No	Yes	No
stupefy	No	No	Yes	No

As verbs, nonplus and stupefy are synonyms defined as:

Other synonyms of nonplus include amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, perplex, pose, puzzle, stick, vex.

nonplus (verb)	stupefy (verb)
be a mystery or bewildering to	make senseless or dizzy by or as if by a blow
	be a mystery or bewildering to
	make dull or stupid or muddle with drunkenness or infatuation