Related Clues:

• Words from one who's defeated
• "Out of the question"
• "Not possible"
• Turndown from the overcommitted
• Defeatist's phrase
• Employee's last words, perhaps
• "___ Help Myself" (Four Tops hit)
• One lacks the ability to follow 1 across.6 How awkward to write up in it
• See 1 across.6 Seems that Charles the Thousandth was a deep one
• "Sorry, got plans"
• Words spoken in a huff, perhaps
• Exclamation of frustration
• 'That's impossible for me'
• 'Sorry, already have plans'
• Work stoppage declaration?