non-observance

n [U] (fml 文) failure to keep or observe (a rule, custom, etc) 不遵从, 违反（规则、 习俗等）: accused of non-observance of the test-ban agreement 被控违反禁止核试验协定.

non compos mentis, non sequitur, non-, non-aggression, non-aligned, non-alignment, non-auditory, non-combatant, non-commissioned, non-committal, non-committally, non-compliance, non-conductor, non-contributory, non-event, non-existent, non-fiction, non-flammable, non-interference, non-iron, non-payment, non-poisonous, non-proliferation, non-resident, non-skid, non-smoker, non-smoking, non-starter, non-stick, non-stop, non-U, non-union, non-verbal, non-violence, non-violent, non-white, nonage, nonagenarian, nonce, nonce-word,