Related Clues:

• Is unable
• "You --- take it with you"
• Terse refusal
• With 1-Across, is very important
• Lacks the skills
• Quitter's contraction
• 'Out of the question'
• Isn't able
• Pitch to one side
• Is unable to
• Specialized lingo
• Naysayer's word
• Lacks what it takes
• Isn't 25-Across
• Singsong speech