Select the INCORRECTLY spelt word.

The incorrectly spelt word is Imigration. The correct spelling is Immigration. It means "the movement of people into a country to live there permanently".

The other words are spelled correctly.

Here is a breakdown of the spelling of each word:

• Equivalent is spelled correctly. It means "equal in value, amount, or importance".
• Unsurpassable is spelled correctly. It means "impossible to surpass or improve upon".
• Inadvertent is spelled correctly. It means "done unintentionally or by accident".