[1] : The Collaborative International Dictionary of English v.0.48

rile \rile\ rimacl, v. t. imp.  p. p. riled rimacld;
   p. pr.  vb. n. riling. see roil.
   1. to render turbid or muddy; to stir up; to roil.
      1913 webster

   2. to stir up in feelings; to make angry; to vex.
      1913 webster

   note: in both senses provincial in england and colloquial in
         the united states.
         1913 webster
see also:
riled riling roil 

[2] : WordNet (r) 2.0

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
see also:
annoy rag get to bother get at irritate 
nark nettle gravel vex chafe 
devil roil 

[3] : Moby Thesaurus II by Grady Ward, 1.0

98 moby thesaurus words for "rile":
   aggravate, agitate, annoy, arouse, badger, bait, be at, beat,
   beat up, bedevil, beset, bother, bristle, brown off, bug, bullyrag,
   burn up, chafe, chivy, churn, churn up, convulse, devil,
   disarrange, discompose, disquiet, distemper, disturb, dog,
   embitter, exasperate, excite, exercise, fash, ferment, flurry,
   fret, get, grate, gripe, harass, harry, heckle, hector, hound,
   huff, incense, inflame, irk, irritate, miff, molest, mud, muddle,
   muddy, nag, needle, nettle, nudzh, paddle, peeve, persecute,
   perturb, perturbate, pester, pick on, pique, plague,
   pluck the beard, pother, provoke, put out, rankle, ride, ripple,
   roil, roughen, ruffle, rumple, set up, shake, shake up, stir,
   stir the blood, stir up, swirl, tease, torment, trouble,
   try the patience, tweak the nose, upset, vex, whip, whip up, whisk,
   work up, worry

Rile >> R Words
Rile, definition of term: Rile
rile_pag1.html