Related Clues:

• Knight's oath
• Impress greatly
• Old-style exclamation
• Jeepers!
• "Horrors!"
• ''Gadzooks!''
• "Impressive!"
• "By Jove!"
• Word akin to "I say!"
• ''I'm amazed!''
• "Holy guacamole!"
• ''Holy smoke!''
• ''That's impressive!''
• ''Unbelievable!''
• 'My heavens!'