Related Clues:

• Untroubled
• 'No sweat'
• Simple
• See 16-Down
• Tranquil
• Not flashy
• 'Easy!'
• It may come before going
• Lenient
• See 32-Across
• 'Whoa, boy!'
• Convenient
• Like falling off a log
• 'Piece of cake!'
• Unadorned