dumbfound vs vex

dumbfound and vex both are verbs.

Word	Noun	Adjective	Verb	Adverb
dumbfound	No	No	Yes	No
vex	No	No	Yes	No

As verbs, dumbfound and vex are synonyms defined as:

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

dumbfound (verb)	vex (verb)
be a mystery or bewildering to	be a mystery or bewildering to
	subject to prolonged examination, discussion, or deliberation
	change the arrangement or position of
	cause annoyance in; disturb, especially by minor irritations
	disturb the peace of mind of; afflict with mental agitation or distress