Related Clues:

• Powerful number about teenager, gutted
• Powerful firm
• Mark __, actor who plays Merlin in the Kingsman franchise
• F-fit?
• Stiff, as a drink
• Art historian Roy ____ became the youngest director of London’s V&A museum in 1973
• Like robusta coffee
• Not weak
• Like a good password
• Heavily caffeinated, say