Select the INCORRECTLY spelt word.

The incorrectly spelt word is Disposeable. The correct spelling is Disposable.

The other words are spelled correctly.

Here is a breakdown of the spelling of each word:

• Harass is spelled correctly. It means "to annoy or bother someone persistently".
• Heavenly is spelled correctly. It means "delightful or blissful".
• Advisable is spelled correctly. It means "wise or sensible to do something".