insanity

there's a streak of insanity in the family.

There was a streak of insanity in the family.

the boundary between sanity and insanity

it might be pure insanity to take this loan.

The legal concept of insanity is of a different nature from the medical.

there was a powerful strain of insanity on her mother's side of the family.

At the murder trial, he pleaded insanity.

the antiquated defence of insanity is rarely invoked in England.

He'll surround himself with the finest lawyers money can buy - and they'll concoct a doozy of an insanity plea.