Amorphous

1. Lacking a definite form or clear shape. Synonyms: formless, [shapeless]
2. (by extension) Being without definite character or nature.
3. (by extension) Lacking organization or unity.
4. (physics) In the non-crystalline solid state of a typically crystalline solid.
5. (set theory, of a set) Infinite and not the disjoint union of two infinite subsets.