Related Clues:

• Make a duplicate of
• Replica
• "In the old grooveroo"
• Clone, for instance
• Like many a 21-Down
• Up on things, daddy-o
• Cool, as a daddy-o
• Cool, like a cat
• Hardly squaresville
• Facsimile
• 'Roger that'
• Make a backup of
• In the know, in old slang
• Mimeo
• Lead-in for cat