Source : Webster's Revised Unabridged Dictionary (1913)

Vex \Vex\, v. t. [imp. & p. p. {Vexed}; p. pr. & vb. n.
   {Vexing}.] [F. vexer, L. vexare, vexatum, to vex, originally,
   to shake, toss, in carrying, v. intens. fr. vehere, vectum,
   to carry. See {Vehicle}.]
   1. To to?s back and forth; to agitate; to disquiet.

            White curl the waves, and the vexed ocean roars.
                                                  --Pope.

   2. To make angry or annoyed by little provocations; to
      irritate; to plague; to torment; to harass; to afflict; to
      trouble; to tease. ``I will not vex your souls.'' --Shak.

            Then thousand torments vex my heart.  --Prior.

   3. To twist; to weave. [R.]

            Some English wool, vexed in a Belgian loom.
                                                  --Dryden.

   Syn: See {Tease}.

Vex \Vex\, v. i.
   To be irritated; to fret. [R.] --Chapman.

Source : WordNet®

vex
     v 1: 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" [syn: {annoy}, {rag}, {get to}, {bother},
           {get at}, {irritate}, {rile}, {nark}, {nettle}, {gravel},
           {chafe}, {devil}]
     2: disturb the peace of mind of; afflict with mental agitation
        or distress; "I cannot sleep--my daughter's health is
        worrying me" [syn: {worry}] [ant: {reassure}]
     3: change the arrangement or position of [syn: {agitate}, {disturb},
         {commove}, {shake up}, {stir up}, {raise up}]
     4: subject to prolonged examination, discussion, or
        deliberation; "vex the subject of the death penalty"
     5: 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" [syn: {perplex}, {stick}, {get},
         {puzzle}, {mystify}, {baffle}, {beat}, {pose}, {bewilder},
         {flummox}, {stupefy}, {nonplus}, {gravel}, {amaze}, {dumbfound}]