This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The act of laying down arms, especially the reduction or abolition of a nation's military forces and armaments.

n. The condition of being disarmed.

n. The reduction or the abolition of the military forces and armaments of a nation, and of its capability to wage war

n. The act of disarming.

n. The act of disarming; the reduction of military and naval forces from a war to a peace footing: as, a general disarmament is much to be desired.

n. act of reducing or depriving of arms

"Reducing anger and jealousy on an individual level - what he termed 'inner disarmament' leads to 'external disarmament' on a wider level, he said."

demobilisation    demobilization   

armament    rearmament   

nonproliferation    arbitration    conciliation    ceasefire    amnesty    repeal    armistice    mobilization    stalemate    emancipation