Select the INCORRECTLY spelt word.

Elimentary

The incorrectly spelled word is Elimentary.

The correct spelling is Elementary.

The word "Elimentary" is not a valid word in the English language. The word "Elementary" refers to the basic or fundamental principles of something. It is derived from the Latin word "elementum", which means "first principle".

The other words, "Aquarium", "Sagittarius", and "Astrological" are all spelled correctly.