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

Recent advances in reinforcement learning for factory tasks support the company’s push to expand robot use across both structured and unstructured environments. —Sujita Sinha, Interesting Engineering, 9 Dec. 2025

Some unstructured wool coats can be handwashed or machine washed using the delicate cycle, a gentle wool wash or detergent, and cold water. —Mary Marlowe Leverette, Southern Living, 9 Dec. 2025

Complete with easy, unstructured choreography, Fiyero’s loose movement mirrors the Scarecrow's clumsiness. —People Staff, PEOPLE, 21 Nov. 2025

This is like, this is one of those most, the most unstructured conversations. —Outside Online, 12 Nov. 2025

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