Related Clues:

• A Guinness world record adjective
• Having seniority
• Most mature
• Most hackneyed
• Most advanced
• Like the one born first
• Most passe
• Most ancient
• Type of trick in the book?
• Eldest
• First established
• Like the kid who rarely gets hand-me-downs
• Most senior in age
• Seen you're sound
• Seen your sound