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Synonyms

undesirable

American  
[uhn-di-zahyuhr-uh-buhl] / ˌʌn dɪˈzaɪər ə bəl /

adjective

  1. not desirable or attractive; objectionable.

    undesirable qualities.


noun

  • undesirables
    plural
  1. a person or thing considered undesirable.

    a collection of malcontents and undesirables.

undesirable British  
/ ˌʌndɪˈzaɪərəbəl /

adjective

  1. not desirable or pleasant; objectionable

"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

noun

  1. a person or thing that is considered undesirable

"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

Other Word Forms

Derived Forms

Inflected Forms

Nouns


Etymology

Origin of undesirable

First recorded in 1660–70; un- 1 + desirable


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.

See Examples For:

None of this means an undesirable outcome with AI is necessarily the result of human carelessness.

From The Wall Street Journal ● Sep. 15, 2026

In a video on X, he said wearing balaclavas was "undesirable" but "perfectly fair for people living in this Orwellian age".

From BBC ● Sep. 6, 2026

“But that’s how things have progressed, and the development of technology will always outpace the development of defenses against the undesirable effects of technology,” he said.

From Los Angeles Times ● Aug. 28, 2026

A wave of artificial-intelligence adoption has come with an undesirable side effect: An explosion of cyberthreats.

From MarketWatch ● Aug. 2, 2026

It seems that nearly every advance in our civilization has some undesirable side effects.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins

The skin barrier does more than just keeping undesirables out––it also is crucial for keeping certain essentials, like water, in.

From National Geographic ● Nov. 28, 2023

Mints are frequent offenders, and they top many gardeners’ lists of undesirables.

From Washington Post ● Mar. 29, 2023

Given that cloud, she believes that Apple can use leak investigations as an easy way to root out undesirables whether or not they actually leaked anything.

From Slate ● Nov. 23, 2021

This was contaminated with all sorts of undesirables: non-recyclable materials, food waste, oils and liquids that rot and spoil the bales.

From The Guardian ● Aug. 17, 2019

The Immigration Act of 1917 barred thirty-three kinds of undesirables from entering the United States, and so, in 1922, on the deck of the Giulia, passengers distussed how to escape the categories.

From "Middlesex: A Novel" by Jeffrey Eugenides

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