Related Clues:

• Half-baked
• Beyond reproach
• Very silly
• ''I'm not kidding!''
• 'Keep it simple, ___'
• Without guile
• ''No fooling!''
• Sharp's opposite
• "No fooling!"
• "I swear!"
• Hardly Ph.D. material
• Like some opinions
• 'I'm not lying!'
• 'Really and truly'
• Life-ending