The Collaborative International Dictionary of English v.0.48:

Nonresistance \Non`re*sist"ance\, n.
   The principles or practice of a nonresistant; passive
   obedience; submission to authority, power, oppression, or
   violence without opposition.
   [1913 Webster]

WordNet (r) 3.0 (2006):

nonresistance
    n 1: group refusal to resort to violence even in defense against
         violence

Moby Thesaurus II by Grady Ward, 1.0:

111 Moby Thesaurus words for "nonresistance":
   Eisenhower Doctrine, Monroe Doctrine, Nixon Doctrine, Quakerism,
   Truman Doctrine, a wise passiveness, acceptance, acquiescence,
   amenability, appeasement, assent, balance of power, brinkmanship,
   coexistence, colonialism, complaisance, compliance, compromise,
   consent, containment, contemplation, contemplative life, deference,
   detente, deterrence, diplomacy, diplomatic, diplomatics,
   do-nothing policy, do-nothingism, do-nothingness, dollar diplomacy,
   dollar imperialism, dormancy, expansionism, foreign affairs,
   foreign policy, good-neighbor policy, homage, humbleness, humility,
   idleness, immobility, imperialism, inaction, inactivity, indolence,
   inertia, inertness, internationalism, isolationism, kneeling,
   laissez-aller, laissez-faire, laissez-faireism, manifest destiny,
   meditation, meekness, militarism, nationalism, neocolonialism,
   neutralism, neutrality, neutralness, noninvolvement, nonopposal,
   nonopposition, nonparticipation, nonviolence,
   nonviolent resistance, obedience, obeisance, open door,
   open-door policy, pacifism, paralysis, passive resistance,
   passive self-annihilation, passiveness, passivism, passivity,
   peace offensive, peaceful coexistence, policy, preparedness,
   procrastination, quiescence, quietism, resignation, resignedness,
   shirt-sleeve diplomacy, shuttle diplomacy, spheres of influence,
   stagnancy, stagnation, standpattism, stasis, subjection,
   submission, submissiveness, submittal, supineness, the big stick,
   tough policy, uncomplainingness, vegetation, vita contemplativa,
   waiting game, watching and waiting, world politics, yielding