Related Clues:

• 'Buh-bye!'
• Jefferson bills, slangily
• They can be wild on tables
• Casual parting ... and a hint to this puzzle's four longest answers
• 'Ta-ta for now!'
• 'Hasta la vista'
• Cards that may be 'wild' in poker
• 'I'm off'
• Casual parting words
• 'I gotta split!'
• Sometimes-wild cards
• Flipping source protects copper - they're two of a kind
• Frequent losers at casinos
• ''Bye for now!''
• ''I'm leavin'!''