WordNet sense 1 (having no definite form or distinct shape):

formless, shapeless

WordNet sense 2 (lacking the system or structure characteristic of living bodies):

unstructured

WordNet sense 3 (lacking the properties characteristic of living organisms):

inorganic

WordNet sense 4 (without real or apparent crystalline form):

uncrystallised, uncrystallized

WordNet sense 5 (not crystalline):

noncrystalline