Related Clues:

• Making short knocking sounds whilst talking briskly
• So very good it's disconcerting
• Extremely irritating
• Line in shopping that's fantastic
• Chatting on about how good it is?
• Cracking, grassing about larceny tip
• Strikingly good or irritating?
• Disconcerting seaman holds officer up
• Sounds like a stone in one's wheel cap is worrying
• Sounding like a clunky engine
• Fast and loose, by the sound of it?
• Not good under-the-hood sound