Related Clues:

• "Nah"
• "I'm good"
• Disapproving remark
• Casual refusal ... and, another way, a hint to this puzzle's four longest answers
• 'That ain't gonna work'
• "Nah, I don't think so"
• 'Nuh-uh!'
• ''Not gonna happen''
• Nope relative
• 'That ain't right'
• 'No can do'
• 'Negatory'
• 'So close, yet so far'
• "So close, yet so far"
• Opposite of "yeah"