English
enlightener
From enlighten + -er.
Formed from enlighten + -er
Proto-Germanic *inliuhtijaną ‘to enlighten, illumine’
Old English inlīhtan ‘to illuminate, make bright, cause to shine’
Middle English enlightenen
English enlighten
Today it means
noun One who, or that which, enlightens.
Language periods are conventional ranges, not dates for this word.
Etymograph / enlightener