Learn how to say Insanity correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word insanity:
the state of being seriously mentally ill; madness:
he suffered from bouts of insanity
extreme foolishness or irrationality:
it might be pure insanity to take this loan
the insanities of our time
late 16th century: from Latin insanitas, from insanus (see insane)