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

• amorphous
• formless
• shapeless
• 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 when data is incomplete, unstructured and entropic, AI systems can compensate by hallucinating answers, leading to inaccurate information and biased outcomes that can reinforce healthcare disparities and, even worse, affect life or death circumstances. —Mika Newton, Forbes.com, 13 May 2025

Parents can offer children opportunities to develop their strengths through summer classes, clubs, and teams—or simply unstructured time at home. —Russell Shaw, The Atlantic, 12 May 2025

In unstructured play, children practice the very skills democracy relies on. —Nancy Richards Farese, Mercury News, 9 May 2025

Male Alzheimer’s caregivers group: The Men’s Breakfast Club is an informal and unstructured gathering of male caregivers. —Joe Rassel, The Orlando Sentinel, 7 May 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