English
maddener
From madden + -er.
Formed from madden + -er
Proto-Indo-European *meyth₂- ‘to change’
…
Old English *mǣdan
Old English ġemǣdan
Middle English mad
Middle English madden ‘to be mad or insane’
English madden
Today it means
noun One who or that which maddens.
Language periods are conventional ranges, not dates for this word.
Etymograph / maddener