Related Clues:

• Interruption
• Klutz's utterance
• Unwelcome word at an antique shop
• 'Um, excuse me'
• Kin of 'Uh-oh!'
• Throat-clearing sound
• 'Excuse me'
• 'Sorry 'bout that!'
• 'Pardon me'
• Butterfingers' remark
• 'Psst!'
• Attention-getter
• Throat clearer
• Doubt-conveying interjection
• Cry over spilled milk