INSANITY
insanity
(noun) relatively permanent disorder of the mind
Source: WordNet® 3.1
Etymology
Noun
insanity (countable and uncountable, plural insanities)
The state of being insane; madness.
Synonyms
• See also insanity
Antonyms
• sanity
Source: Wiktionary
In*san"i*ty, n. Etym: [L. insanitas unsoundness; cf. insania
insanity, F. insanite.]
1. The state of being insane; unsoundness or derangement of mind;
madness; lunacy.
All power of fancy overreason is a degree of insanity. Johnson.
Without grace The heart's insanity admits no cure. Cowper.
2. (Law)
Definition: 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.
Syn. - Insanity, Lunacy, Madness, Derangement, Aliention, Aberration,
Mania, Delirium, Frenzy, Monomania, Dementia. Insanity is the generic
term for all such diseases; lunacy has now an equal extent of
meaning, though once used to denote periodical insanity; madness has
the same extent, though originally referring to the rage created by
the disease; derangement, alienation, are popular terms for insanity;
delirium, mania, and frenzy denote excited states of the disease;
dementia denotes the loss of mental power by this means; monomania is
insanity upon a single subject.
Source: Webster’s Unabridged Dictionary 1913 Edition