Select the INCORRECTLY spelt word.

Gymnestiks

The incorrectly spelled word is Gymnestiks.

The correct spelling is Gymnastics.

The word "Gymnestiks" is not a valid word in the English language. The word "Gymnastics" refers to a sport that involves physical exercises requiring balance, flexibility, coordination, and strength. It is derived from the Greek word "gymnasticos", which means "pertaining to exercise".

The other words, "Packaging", "Succeed", and "Attract" are all spelled correctly.