Source : WordNet®

unstructured
     adj 1: lacking definite structure or organization; "an unstructured
            situation with no one in authority"; "a neighborhood
            gang with a relatively unstructured system"; "children
            in an unstructured environment often feel insecure";
            "unstructured inkblots" [ant: {structured}]
     2: lacking the system or structure characteristic of living
        bodies [syn: {amorphous}]