Basic, fundamental or elementary.
Of, or relating to a force of nature, especially to severe atmospheric conditions.
Of, relating to, or being an element (as opposed to a compound).
Of the ancient supposed elements of earth, air, fire and water.
A creature (usually a spirit) that is attuned with, or composed of, one of the classical elements: air, earth, fire and water or variations of them like ice, lightning, etc. They sometimes have unique proper names and sometimes are referred to as Air, Earth, Fire, or Water.
Reduced to essentials; without enhancements.