Exigence or Exigency
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Demand, want, need, imperativeness.
— Exigency of a bond. That which tha bond demands or exacts, i. e., the act, performance, or event upon which it is conditioned.
— Exigency of a writ. The command or imperativeness of a writ; the directing part of a writ; the act or performance which it commands.