neprātis

Etymology
From (itself from ), made into a 2nd-declension masculine noun.

Noun

 * 1) (male) fool man who behaves or acts without thinking, against common sense
 * 2) (male) madman man with serious mental problems
 * 3) foolhardy, reckless man
 * 1) foolhardy, reckless man
 * 1) foolhardy, reckless man