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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.

His research has found unstructured interviews lead to poor predictive accuracy.

From The Wall Street Journal • Jun. 16, 2026

Large language models enable unstructured as well as structured data to be extracted and quality-controlled in real-time in a way that wasn’t possible before, said Paradigm founder and Chief Executive Kent Thoelke.

From The Wall Street Journal • Apr. 28, 2026

In that traditional view, the genome remained largely unstructured until it "woke up" and initiated its genetic program.

From Science Daily • Feb. 27, 2026

The high-intensity, unstructured nature of the game suited France's fleet-footed backline, but it was an Irish defensive lapse that led to the home side's second try.

From BBC • Feb. 5, 2026

The gap was filled with recreation: unstructured time in the yard or gym.

From "Newjack: Guarding Sing Sing" by Ted Conover

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