Next, I should outline the options. Mention that while a free PDF isn't available, there are legitimate sources like the Merriam-Webster website where they can look up words online. Also, maybe suggest purchasing an e-book version through platforms like Kindle or the publisher's site. Additionally, some libraries offer access to digital versions through their online services like OverDrive or Libby.

I need to structure the response in a clear and helpful manner, avoiding jargon. Start by stating the unavailability of the PDF, explain copyright concerns, offer legal access methods, and suggest free alternatives. Make sure to emphasize the importance of respecting intellectual property rights.

I should consider the user’s possible intent. They might be looking for study materials, or maybe they want a reference copy without buying it. Alternatively, they might not be aware of the copyright issues. I need to explain the legal aspects clearly but also provide alternatives that they can legally access.