Possible Clues:

• That old man, an old man that's dirty.
• He is relatively an unwashed fellow
• Man, an old one that's a bit dirty
• Relatively an unwashed state
• Is he a dirty old man? Relatively so to begin with
• He's relatively an elderly, dirty man
• Begins to be relatively in want of a wash
• Would this make him an unwashed old man to a relative extent?
• Filthy article by relation
• This might be relatively an old man that's dirty