Related Clues:

• A necessary thing
• "You __ be kidding!"
• 'You __ be kidding!'
• '___ catch 'em all'
• 'If We ___ Die'
• "___ boogie!"
• Damp smell
• '___ Catch 'Em All' (Pokemon slogan)
• "I ___ Feeling" (Black Eyed Peas hit)
• Has to be new wine
• Have to, informally
• ___-see (can't-miss attraction)
• "The show ___ go on"
• Is obliged to Greek character on street
• Absolute necessity