Related Clues:

• End of shift in middle of day is unacceptable
• Refusal of weight unacceptable
• Half-hearted idea is unacceptable
• Morally unacceptable idea one isn't involved in
• A bit thick, knocked over just the same
• It's unacceptable either way
• '__ your life!'
• Idea lacking information? Either way it's unacceptable
• ''__ my watch!''
• Lacking one's A game
• Waiting in the wings, perhaps
• It's impossible, climbing or descending
• Off, palindromically
• I abandoned idea that's impossible
• Impossible, however you look at it