Related Clues:

• Rear; severe, serious
• Grim, strict
• Rear, enforcing discipline
• Strict, grim
• Severe; back
• Demanding back
• Severe, demanding
• Looking severe from the rear
• Grim; severe
• Grim novelist finally failed
• Southern bird's back
• It's grim at the back of the galley!
• Serious; severe
• Tail of a beagle
• Grimly serious