Related Clues:

• Dim, indistinct
• Vague rule bosun amended without resistance
• Uncertain remedy to be used under observation
• Vague old bishop introducing second churchman
• Gloomy note found in safe after he died
• Cloudlike; vague
• Little-known old surgeon's restoration to health
• Vague refusal to accept oil that turns up unserviceable
• Little-known scientist looking into our energy
• Uncertain; indistinct
• Cloud over. Rubbish! That's smoke
• Lacking distinct form
• Recherché word for 'fog'
• Hard to see the ring the scientist dropped over the river
• Old graduate banker hard to understand