Related Clues:

• It's not an option
• Something missing
• Urgent want
• Financial aid basis
• Scarce supply
• It might be dire
• Food or water, e.g.
• '___ a lift?'
• Be unable to function without
• Is without
• Absolutely require
• Supply-and-demand problem
• Opposite of a surplus
• "A friend in ___ is . . ."
• Reason for some scholarships