Related Clues:

• It is not commonly a defect
• Area in shade will be soil
• Blight? It isn’t heard of in parts of the country
• Apt letters missing from con_ _m_ _a_e
• It isn’t commonly a stain or blemish
• Contaminate home, leaving rubbish round
• Corrupt leaders in thrash arranged inside Number Ten
• Base of allotment isn't soil
• Informally, it is not corrupt?
• As some might say, it's not muddy
• It is not commonly something that causes pollution
• Sully, tarnish
• "'Tis" opposite
• 'Tis opposite