Related Clues:

• Oft-used coupler
• As an alternative
• Popular connector
• "If all --- fails..."
• Frequent joiner
• Connector of the quip
• Conversational prompt
• Lightning-thunder connector
• Other than
• ''What --- can go wrong?''
• So-so link?
• ''So, what --- is new?''
• It often comes between partners
• Not only that
• Inclusive word