Here are the definitions:
* Devilish:
* Characterized by evil or malice; wicked. This is the most common usage, implying a mischievous or spiteful nature.
* Extremely attractive or tempting. This usage is less common and often refers to a beautiful or seductive person or thing.
* Devilous:
* Relating to the devil or suggestive of his nature. This is the more formal usage, usually referring to something demonic or supernatural.
* Wicked or mischievous; devilish. This is basically interchangeable with "devilish."
Examples:
* Devilish: "He had a devilish grin on his face." (wicked)
* Devilous: "The castle had a devilous atmosphere." (demonic)
* Devilish: "The dress she wore was devilishly attractive." (tempting)
In essence, "devilish" and "devilous" both describe something that is evil, mischievous, or alluring, with a hint of the supernatural. However, "devilish" is more versatile and commonly used in everyday speech.