IPA: /ˈwɔːr.fɛr/
KK: /ˈwɔrˌfɛr/
The act of engaging in conflict or war, often involving military operations against an enemy.
The two countries have been in a state of constant warfare for years.
Warfare → It is formed from "war" (from Old English *werre*, meaning conflict or battle) and "-fare" (from Old English *faran*, meaning to journey or travel). The word "warfare" refers to the act of engaging in war or the conduct of war as a journey of conflict.
Think of 'war' as a conflict and '-fare' as a journey — warfare is the journey of conflict.