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Synonyms

unstructured

American  
[uhn-struhk-cherd] / ʌnˈstrʌk tʃərd /

adjective

  1. lacking a clearly defined structure or organization.

    an unstructured conference; an unstructured school environment.


unstructured British  
/ ʌnˈstrʌktʃəd /

adjective

  1. without formal structure or systematic organization

  2. without a preformed shape; (esp of clothes) loose; untailored

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of unstructured

First recorded in 1940–45; un- 1 + structured

Explanation

Unstructured is an adjective describing something that lacks structure or form. Some things should never be left unstructured, like a schedule for building a house or a timeline for retirement. A popular phrase that's currently associated with this adjective is unstructured time, which is another way of saying "there's nothing on the schedule." Unstructured time might encourage daydreaming, creativity, or stress management, but for extremely organized people who like to follow schedules and have everything in order, unstructured anything can make them feel lazy or crazy.

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Vocabulary lists containing unstructured

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Data isn’t ready: Most firms are sitting on years of unstructured information — documents, models, notes — that weren’t designed for machines.

From MarketWatch • Apr. 10, 2026

Because condensates behave like liquids that can fuse, flow, and quickly exchange components, scientists long believed they were simple, unstructured droplets.

From Science Daily • Feb. 26, 2026

You can see why, but a gambler would have gone with Van der Merwe in the hope that Scotland can create the kind of unstructured mayhem that could see him reborn.

From BBC • Feb. 13, 2026

"I'm really hopeful there that we'll see Marcus in space in unstructured opportunities," said England coach Borthwick after naming his team to play Fiji on Thursday.

From Barron's • Nov. 6, 2025

The unstructured blobs of irregular galaxies, the arms of spiral galaxies and the torus of ring galaxies exist for only a few frames in the cosmic motion picture, then dissipate, often to be reformed again.

From "Cosmos" by Carl Sagan

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