Insane

Friday 2^nd September 2016

Insane /ɪnˈseɪn/

Adjective

1. (a) mentally deranged; crazy; of unsound mind

   (b) (as collective noun; preceded by the): the insane

2. characteristic of a person of unsound mind: an insane stare

3. irresponsible; very foolish; stupid

Derived Forms

insanely, adverb 
insaneness, noun

Quote

He presumed to place me under restraint in his own house in hopes of either

driving me insane or poisoning me.

‘The King in Yellow,’ the ‘True Detective’ Reference That’s the Key to the Show

Robert W. Chambers 19 February 2014

Word Origin and History

1550’s - of persons, "mentally damaged," from Latin insanus "mad, insane, of unsound mind; outrageous, excessive, extravagant," from in- "not" + sanus "well, healthy, sane".

In reference to actions, "irrational, evidencing madness," from 1842 in English.

The noun meaning "insane person" is attested from 1786.

Thanks to: www.dictionary.com