The Collaborative International Dictionary of English v.0.48:

Fuss \Fuss\, v. i. [imp. & p. p. Fussed; p. pr. & vb. n.
   Fussing.]
   To be overbusy or unduly anxious about trifles; to make a
   bustle or ado. --Sir W. Scott.
   [1913 Webster]