Related Clues

• One way to be knocked
• Fatuous
• Nonsensical
• Frivolous
• Lacking gravity
• Birdbrained
• Foolish
• A bit ludicrous
• Zany
• Not at all serious
• Preposterous
• Goofy
• Half-baked
• Ludicrous
• Clownish
• Off-the-wall
• Inane
• Ridiculous
• Idiotic
• ___ String