Source : Webster's Revised Unabridged Dictionary (1913)

Prudence \Pru"dence\, n. [F., fr. L. prudentia, contr. from
   providentia. See {Prudent}, and cf. {Providence}.]
   The quality or state of being prudent; wisdom in the way of
   caution and provision; discretion; carefulness; hence, also,
   economy; frugality.

         Prudence is principally in reference to actions to be
         done, and due means, order, seasons, and method of
         doing or not doing.                      --Sir M. Hale.

         Prudence supposes the value of the end to be assumed,
         and refers only to the adaptation of the means. It is
         the relation of right means for given ends. --Whewell.

   Syn: Wisdom; forecast; providence; considerateness;
        judiciousness; discretion; caution; circumspection;
        judgment. See {Wisdom}.

Source : WordNet®

prudence
     n 1: discretion in practical affairs [ant: {imprudence}]
     2: knowing how to avoid embarrassment or distress; "the
        servants showed great tact and discretion" [syn: {discretion},
         {discreetness}, {circumspection}]