expediency

noun4

1. •
   The quality of being fit or suitable to effect some desired end or the purpose intended; suitability for particular circumstance or situation.

   • Imperfet governments […] may palliate crimes upon the plea of necessity or expediency; divine wisdom discovers no expediency in vice; […] — 1810
2. •
   An expedient.
3. •
   Pursuit of the course of action that brings the desired effect even if it is unjust or unprincipled.

   • Utterly neglectful of what he owes to the kingdom which he hopes to regain, Charles has learned but adversity's worst lesson—expediency. — 1834
4. •
   (no longer used) Haste; dispatch.