### Clue: Lexicographer is a scholar, chap in epistolatory relations (3,2,7)
### Answer: MAN OF LETTERS 
 ### Explanation: Definition: scholar
  MAN OF(*chap in*) LETTERS(*epistolatory*,in the form of letters,correspondence).  Defn:  I don't quite know what to make of the clue construction, as the definitional part seems to be in the middle.  Unless "*lexicographer*" is meant to be another definition or another wordplay viz. One who writes or compiles or edits a dictionary, ie. a man of words, and since words are made up of letters, also a man of letters?