Vex has 8 different meanings across 2 categories:
Verb · Proper Noun
A trouble.
cause annoyance in; disturb, especially by minor irritations
"Mosquitoes buzzing in my ear really bothers me"
"It irritates me that she never closes the door after she leaves"
disturb the peace of mind of; afflict with mental agitation or distress
"I cannot sleep--my daughter's health is worrying me"
change the arrangement or position of
subject to prolonged examination, discussion, or deliberation
"vex the subject of the death penalty"
be a mystery or bewildering to
"This beats me!"
"Got me--I don't know the answer!"
"a vexing problem"
"This question really stuck me"
To trouble aggressively, to harass.
Initialism of Venus Express.