Related Clues:

• More draconian
• Less flexible
• Less forgiving
• More severe
• Tougher, as a parent
• Less lenient
• Harsher
• Tougher, as a schoolmarm
• More forbidding
• Less lax
• More uncompromising
• More unyielding
• "Ambition should be made of __ stuff": "Julius Caesar"
• Less affable
• Renters of more strict sort