Related Clues:

• It comes to a head
• Creative nugget
• Exclamation point?
• Inventor's "step one"
• Sneaking suspicion
• Bright thoughts
• Cortex activity
• Theme
• Result of cogitating
• Bean product?
• Gray matter output
• Entrepreneur's start
• 'The very ___!'
• Impression
• Phrontistery product