Related Clues:

• 'If I may interrupt, ...'
• Cutting-in noise
• 'Pardon me...'
• Throaty interjection
• 'What am I, invisible?'
• "Beg pardon ..."
• Interjection to express doubt
• Throaty cousin of ''psst!''
• Meaningful little cough
• 'Excuse me …'
• 'Psst' alternative
• Sound of impatience
• ''Allow me''
• ''Pardon me''
• ''Might I add a word?''