Answer: emender

AnswerCrossword Clue
EMENDEREditor
EMENDERCorrector.
EMENDEREditor.
EMENDERReviser.
EMENDERDiaskeuast
EMENDERRedactor
EMENDERPublishing-house employee
EMENDERCorrectional worker?
EMENDEREditor, at times
emenderone who emends (to correct, also EMENDATE)