Related Clues:

• "--- fast!" (slow down)
• "Nope!"
• Casual turndown word
• 'In your dreams!'
• ''Uh-uh''
• ''Nah''
• '___ fast!'
• Slangy dissent
• Negative slang word
• Casual denial
• ''I don't think so''
• ''Au contraire!''
• Terse refusal
• "Not gonna happen"
• 'Fat chance'