Related Clues:

• Robust, strong
• Strong and solidly built
• Well-built — strapping
• Read about redhead getting tough
• Solidly made
• Writing in academic work is robust
• Strong language mostly found in grotty accommodation
• Research leader in survey is resolute
• Not likely to collapse
• Solid resistance to engage in intellectual activity
• Robust analysis is about right
• Robust academic work about arithmetic, say?
• Well-made chair finally installed in workplace
• Strapping king in private room
• Strong and well-built