Related Clues:

• Abrasive, rough or unkind
• Exacting, severe, rigid
• Strict and severe
• Austere, grim
• Strict, harsh
• Strict, stark
• Stern, harsh
• Harsh or strict
• Of rule, say strict and precise
• Severe, stern
• Rigidly accurate
• Forbidding, austere
• Exacting, rigid
• Harsh and strict
• Austere, stern