vex - verb

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

vex - thesaurus

agitate   amaze   annoy   baffle   beat   bewilder   bother   chafe   commove   devil   disturb   dumbfound   flummox   get   gravel   irritate   mystify   nark   nettle   nonplus   perplex   pose   puzzle   rag   rile   stick   stupefy   worry