The Collaborative International Dictionary of English v.0.48:

To-do \To-do"\, n. [To + do. Cf. Ado.]
   Bustle; stir; commotion; ado. [Colloq.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

to-do
    n 1: a disorderly outburst or tumult; "they were amazed by the
         furious disturbance they had caused" [syn: disturbance,
         disruption, commotion, flutter, hurly burly, to-
         do, hoo-ha, hoo-hah, kerfuffle]