Related Clues:

• More abrupt
• More unpleasant than retsina? Unlikely!
• Showing less refinement
• Education's ending, as grade not so good
• Degeneration of retinas more unpleasant
• Worse bit of hardware, it's a nightmare to set up
• Retsina (anag.)
• Naming and shaming starts and row gets worse
• Comparatively vile in-laws consistently row
• More grinchlike
• Game to get embarrassed about, with more offensive language?
• More unpleasant retsina circulated
• More Grinch-like
• Comparatively unpleasant
• One intending to be less generous