Related Clues:

• Avoid a black spot
• A book mark to steer clear of
• Vote not to
• Don't indulge - you'll get a black mark!
• A bishop and saint oddly have no Christmas spirit?
• Act as one in AA putting first of servicing tools automatically in a container
• Stigma following sailor's refrain
• Don't make one cross?
• Tummy muscles ain't out of shape, so avoid getting stout?
• One on board facing sign of shame? Avoid expressing an opinion
• Drunk sat in a part of the wine cellar -- to kick his habit?
• Refrain from giving sailor dirty look
• Top marks, bad mark? Stay neutral, in a way
• Jack in sailor's vessel going around area
• Sailor Mark to keep off the rum?