outwar means to defeat or surpass (someone) in warfare. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From out- + war.
verb
- To defeat or surpass (someone) in warfare.“They [the French] deſire (king Edward [III] grovvne aged) not to ſeeme by ſitting ſtill vpon ſo many thornes of diſgrace, and loſſe, to haue beene outvvarred, though ouer-vvarred, and though in tvvo or three battels inferior, yet not to haue beene clearly debellated.”