The Collaborative International Dictionary of English v.0.48:

Daddle \Dad"dle\ (d[a^]d"d'l), v. i. [imp. & p. p. Daddled, p.
   pr. & vb. n. Daddling.] [Prob. freq. of dade.]
   To toddle; to walk unsteadily, like a child or an old man;
   hence, to do anything slowly or feebly.
   [1913 Webster]