Of, relating to, or being an element (as opposed to a compound).
Of, or relating to a force of nature, especially to severe atmospheric conditions.
Basic, fundamental or elementary.
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.
Of or relating to construction or to architecture
Structural
Of, relating to, or caused by large-scale movements of the Earth's (or a similar planet's) lithosphere
momentous, utter, vast