Definition of Unstructured

Adjective: unstructured  ,ún'strúk-chu(r)d

1. Lacking definite structure or organization
   "an unstructured situation with no one in authority"; "a neighbourhood gang with a relatively unstructured system"; "children in an unstructured environment often feel insecure"; "unstructured inkblots"
    
2. Lacking the system or structure characteristic of living bodies
   - amorphous

See also:
unstriped
unstrung