Source : Webster's Revised Unabridged Dictionary (1913)

Collude \Col*lude"\, v. i. [imp. & p. p. {Colluded}; p. pr. &
   vb. n. {Colluding}.] [L. colludere, -lusum; col- + ludere to
   play. See {Ludicrous}.]
   To have secretly a joint part or share in an action; to play
   into each other's hands; to conspire; to act in concert.

         If they let things take their course, they will be
         represented as colluding with sedition.  --Burke.