renunciation of war; outlawing war
Often used in political or constitutional contexts, such as Japan's Article 9. Refers to the principle of rejecting war as a means of settling disputes.
The Constitution of Japan advocates the renunciation of war.
非戦の理念は国際平和に貢献する。
The principle of outlawing war contributes to international peace.
非戦 is a slightly more formal, principled rejection of war (as in 非戦論), while 反戦 more often describes active protest or movements against a war.
Compound of 非 (hi, 'non-, anti-') and 戦 (sen, 'war'). The term gained prominence in post-WWII Japan, particularly in discussions of Article 9 of the constitution.