безумие

Noun

 * 1) lunacy, madness, ludicrousy
 * 2)  unreasonable, immoderate act, decision, or situation which ensues from such an action/decision

Etymology
From.

Noun

 * 1) lunacy, folly, madness, insanity

Etymology
, which is a calque of. .

Noun

 * 1) insanity, madness
 * 2) folly
 * 1) folly