The Collaborative International Dictionary of English v.0.48:

Shun \Shun\, v. t. [imp. & p. p. Shunned; p. pr. & vb. n.
   Shunning.] [OE. shunien, schunien, schonien, AS. scunian,
   sceonian; cf. D. schuinen to slepe, schuin oblique, sloping,
   Icel. skunda, skynda, to hasten. Cf. Schooner, Scoundrel,
   Shunt.]
   To avoid; to keep clear of; to get out of the way of; to
   escape from; to eschew; as, to shun rocks, shoals, vice.
   [1913 Webster]

         I am pure from the blood of all men. For I have not
         shunned to declare unto you all the counsel of God.
                                                  --Acts xx.
                                                  26,27.
   [1913 Webster]

         Scarcity and want shall shun you.        --Shak.
   [1913 Webster]

   Syn: See Avoid.
        [1913 Webster]

WordNet (r) 3.0 (2006):

shunning
    n 1: deliberately avoiding; keeping away from or preventing from
         happening [syn: avoidance, turning away, shunning,
         dodging]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "shunning":
   avoidance, avoiding reaction, circumvention, defense mechanism,
   dodge, duck, elusion, elusiveness, equivocation, escape, eschewal,
   evasion, evasive action, evasiveness, forbearance, forestalling,
   forestallment, getting around, jink, neutrality, nonintervention,
   noninvolvement, prevention, refraining, runaround, shunting off,
   shy, sidestep, sidetracking, slip, the runaround, zigzag