Related Clues:

• Neither liquid nor gaseous
• Having no internal cavity
• Toastmaster, and a homophonic hint to this puzzle's five longest answers
• Reliable — strong
• 'The Racer's Edge' product
• One making introductions
• Firm one's engaged by was traded
• Oscars host, e.g
• Hard, compact
• Like a rock?
• __ as a rock (reliable)
• Familiar Steve Harvey role
• Link between speakers
• Like low-numbered billiard balls
• "Up next ..." sayer