Related Clues:

• Certainly not close to autumn, the night before last in summer
• ''No can do''
• When pigs fly in one vertically
• Grunts meaning 'No way!'
• Definitive denial
• 'Don't even go there!'
• Succinct version of the combined final words of the starred answers
• Adamant refusal
• "___ Mind the Bollocks, Here's the Sex Pistols"
• Not a single time
• 'That's not true!'
• "Not happenin'"
• ''Ain't gonna happen''
• "Nah"
• Disapproving remark