Related Clues:

• Interruption
• Except
• 'Um, excuse me'
• See 26-Across
• Throat-clearing sound
• 'Excuse me'
• 'Pardon me'
• Condition
• 'Psst!'
• Attention-getter
• Excluding
• Throat clearer
• Doubt-conveying interjection
• Word of qualification
• Nevertheless