Meaning of INSANITY in English
noun the state of being insane; unsoundness or derangement of mind; madness; lunacy.
2. insanity ·noun such a mental condition, as, either from the existence of delusions, or from incapacity to distinguish between right and wrong, with regard to any matter under action, does away with individual responsibility.
Webster English vocab. Английский словарь Webster. 2012