Source : Webster's Revised Unabridged Dictionary (1913)

Rile \Rile\ (r[imac]l), v. t. [imp. & p. p. {Riled} (r[imac]ld);
   p. pr. & vb. n. {Riling}.] [See {Roil}.]
   1. To render turbid or muddy; to stir up; to roil.

   2. To stir up in feelings; to make angry; to vex.

   Note: In both senses provincial in England and colloquial in
         the United States.

Source : WordNet®

rile
     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}, {nark}, {nettle}, {gravel}, {vex},
           {chafe}, {devil}]
     2: make turbid by stirring up the sediments of [syn: {roil}]