strife

noun5

1. •
   Exertion or contention for superiority, either by physical or intellectual means.

   • From forth the fatal loins of these two foes A pair of star-cross'd lovers take their life; Whose misadventured piteous overthrows Do with their death bury their parents' strife. — 1591
2. •
   Bitter conflict, sometimes violent.
3. •
   Striving; earnest endeavor; hard work.
4. •
   (informal) A trouble of any kind.
5. •
   (no longer used) That which is contended against; occasion of contest.

   • He spide lamenting her unlucky strife, — 1590