Source : Webster's Revised Unabridged Dictionary (1913)

Urgent \Ur"gent\, a. [L. urgens, p. pr. of urgere: cf. F.
   urgent. See {Urge}.]
   Urging; pressing; besetting; plying, with importunity;
   calling for immediate attention; instantly important. ``The
   urgent hour.'' --Shak.

         Some urgent cause to ordain the contrary. --Hooker.

         The Egyptians were urgent upon the people that they
         might send them out of the land in haste. --Ex. xii.
                                                  33.

Source : WordNet®

urgent
     adj : compelling immediate action; "too pressing to permit of
           longer delay"; "the urgent words `Hurry! Hurry!'";
           "bridges in urgent need of repair" [syn: {pressing}]