undesirable

1 of 2

adjective

un·​de·​sir·​able ˌən-di-ˈzī-rə-bəl How to pronounce undesirable (audio)
: not desirable : unwanted
undesirable side effects
undesirability noun
undesirableness noun
undesirably adverb

undesirable

2 of 2

noun

: one that is undesirable

Examples of undesirable in a Sentence

Adjective The drug has some undesirable side effects. This may have undesirable consequences. Frankly, it's an undesirable and unpleasant job.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The neighborhood was affordable, which is to say, undesirable. Murr Brewster, Christian Science Monitor, 16 Apr. 2025 If their CoT doesn't faithfully reference all factors influencing their answers (like hints or reward hacks), monitoring them for undesirable or rule-violating behaviors becomes substantially more difficult. ArsTechnica, 10 Apr. 2025
Noun
According to a study by Amerisleep, the list of undesirables includes bacteria, body fluids, dead skin cells and dust mites, all of which can harm your health, not to mention your peace of mind. Terry Baddoo, USA Today, 19 Apr. 2025 Extra funding means nothing when the IRS is used to go after political opponents and perceived undesirables. William Henck, Orlando Sentinel, 20 Dec. 2024 See All Example Sentences for undesirable

Word History

First Known Use

Adjective

1667, in the meaning defined above

Noun

1883, in the meaning defined above

Time Traveler
The first known use of undesirable was in 1667

Browse Nearby Words

Cite this Entry

“Undesirable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undesirable. Accessed 24 Apr. 2025.

Kids Definition

undesirable

adjective
un·​de·​sir·​able
ˌən-di-ˈzī-rə-bəl
: not desirable : unwanted
undesirability
-ˌzī-rə-ˈbil-ət-ē
noun
undesirable noun
undesirableness
-ˈzī-rə-bəl-nəs
noun
undesirably
-blē
adverb

More from Merriam-Webster on undesirable

Last Updated: - Updated example sentences
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