Related Clues:

• Word of warning
• 1958 Presley #1 hit
• Quip, part 2
• See 50-Across
• 1958 Elvis song
• Faux pas
• No-no
• Tip-off
• Alarm
• Quote, part 5
• One-word advice
• 'Cut that out!'
• See 26-Down
• Stop order?
• 'Stop it!'