unstructured

adjective

un·​struc·​tured ˌən-ˈstrək-chərd 

: lacking structure or organization: such as

a

: not formally organized in a set or conventional pattern

an unstructured question

feel insecure in an unstructured situation

b

: not having a system or hierarchy typical of an organized society

Synonyms of unstructured

• chaotic
• amorphous
• shapeless
• formless
• unformed
• unshaped

Examples of unstructured in a Sentence

Unstructured play time is important for children.

Her life is very unstructured.

Recent Examples on the Web

And the corridors bend with the shape of the building and terminate with a windowed study area that provides sunlit spaces that promote unstructured meetings. —Edward Keegan, Chicago Tribune, 5 Apr. 2026

Leisurely weekend versions with plenty of unstructured free time built in, plus some more time-intensive chores. —Tessa Cooper, Southern Living, 3 Apr. 2026

Software built on generic, unstructured, unverified public internet data is essentially feeding AI low-grade kerosene. —Leagh Turner, Fortune, 30 Mar. 2026

The first half of the event includes activities that participants rotate through and the second half is an unstructured hangout session where teens can listen to music, complete an art project or play a variety of board, yard and video games. —Pomerado News, San Diego Union-Tribune, 20 Mar. 2026

Word History

First Known Use

1936, in the meaning defined above

Medical Definition

unstructured

adjective

un·​struc·​tured ˌən-ˈstrək-chərd 

: lacking structure : not formally organized

unstructured psychological tests