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

This unstructured data represents over 80% of information in organizations today. —Nick Lichtenberg, Fortune, 13 Feb. 2026

There is growing interest in using robots beyond factories – in construction sites, disaster zones, logistics yards, and other unstructured settings. —Bojan Stojkovski, Interesting Engineering, 10 Feb. 2026

There’s a timeless feeling of childhood in the unstructured fluidity of their day, teetering on the border of dreaminess and boredom, its possibilities both expanded and limited by the boys’ imagination. —Richard Brody, New Yorker, 6 Feb. 2026

The winners will be those who build relatively structured AI workflows around unstructured systems. —Joe Toscano, Forbes.com, 28 Jan. 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