Answer:

dement

Answer	Crossword Clue
DEMENT	Make mad
DEMENT	Madden
DEMENT	Make insane

DEMENT	Lose one's mind.
DEMENT	Craze.
DEMENT	Drive crazy.
DEMENT	Make insane.
DEMENT	Madden.
DEMENT	Deprive of reason.
DEMENT	Deranged one
DEMENT	Madman

DEMENT	Lunatic of old
DEMENT	Make insane, old-style
DEMENT	Induce insanity

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.