Related Clues:

• I prove the fool a philosopher
• In the constitution of copper, perhaps, he determines when to show hesitation
• Ore tester
• Years possibly follow as a metal tester
• 21-Across tester
• (Precious metal) analyst
• Tester of fine metal
• One evaluating a second speaker?
• Maybe lead examiner in role of speaker
• Analyst in role of, for example, English king
• Tester of metals
• One who tests metals
• One's testing as one's talking
• One doing tests mid-term after top grades for example
• A sailing vessel reaches port carrying European analyst