nonstructured

adjective

non·​struc·​tured ˌnän-ˈstrək-chərd 

: lacking structure or organization : unstructured

nonstructured play

Patients … can easily be frightened by the daily demands of life in a noninstitutional, nonstructured setting.

—Barbara M. Swanson

Word History

First Known Use

1916, in the meaning defined above