Possible Clues:

• 'Cloudy, lacking definite form (8)'
• Cloudlike; vague
• Benjamin takes over university debts tipping off Misty
• It might be a little fuzzy but it's so Bunuel
• Unclear how foggy this is
• Vague refusal to accept oil that turns up unserviceable
• Vague sense to gather up American lubricant
• Lacking distinct form
• Hazy blue liquid no American has consumed
• Shapeless half-nude with blouse undone