Related Clues:

• Worry, informally
• Worrisome guitar part?
• Fingerboard ridge
• Stay awake nights
• Be crabby
• ___ it out
• Agonize
• Overdo the 'what if?'
• Ridge on a guitar neck
• Real effort
• ''Don't --- the small stuff!''
• Bite one's nails
• Palaver
• 'Don't ___ it!'
• Guitar ridge