The Collaborative International Dictionary of English v.0.48:

Tiff \Tiff\, v. i. [imp. & p. p. Tiffed; p. pr. & vb. n.
   Tiffing.]
   To be in a pet.
   [1913 Webster]

         She tiffed with Tim, she ran from Ralph. --Landor.
   [1913 Webster]