The Collaborative International Dictionary of English v.0.48:

Trifle \Tri"fle\, v. i. [imp. & p. p. Trifled; p. pr. & vb. n.
   Trifling.] [OE. trifelen, truflen. See Trifle, n.]
   To act or talk without seriousness, gravity, weight, or
   dignity; to act or talk with levity; to indulge in light or
   trivial amusements.
   [1913 Webster]

         They trifle, and they beat the air about nothing which
         toucheth us.                             --Hooker.
   [1913 Webster]

   To trifle with, to play the fool with; to treat without
      respect or seriousness; to mock; as, to trifle with one's
      feelings, or with sacred things.
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