Source : Webster's Revised Unabridged Dictionary (1913)

Dadle \Dad"le\, 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.