undisciplined
Britishadjective
Explanation
Undisciplined means uncontrolled or disorderly. An undisciplined bunch of dogs is nearly impossible to walk down the sidewalk together: they all want to run in different directions, chase squirrels, and bark wildly. When you take the word disciplined, "showing control or order," and add un-, or "not," to it, you get undisciplined. This is a great way to describe an out-of-control classroom, an athlete whose explosive anger gets her kicked off the field, or someone who can't manage his own money well, spending an entire paycheck all in one place.
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.
GM executives blamed the unrest on workers who were undisciplined and immature.
From The Wall Street Journal ● Oct. 15, 2026
The agreement inspires "very little confidence" as recent incidents of AI going rogue suggest companies have been undisciplined in their approach, she added.
From BBC ● Sep. 30, 2026
Years of undisciplined fiscal policy have doubled the debt-to-GDP ratio over the past two decades to over 100% in the U.S.
From MarketWatch ● Sep. 15, 2026
This time it was the notion that Gehry’s work was visually chaotic, not merely unresolved but undisciplined, that was exposed as a severely limited reading of his work.
From Los Angeles Times ● Dec. 5, 2025
These young men were untrained and undisciplined and became involved in activities that were unbecoming to a liberation struggle.
From "Long Walk to Freedom" by Nelson Mandela
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