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
Soapstone is a nonporous natural stone that won’t absorb undesirable flavors or smells. Bestreviews, Chicago Tribune, 14 Aug. 2025 Attempting to speak can also produce distracting noises and facial expressions that users find undesirable. Emma R. Hasson, Scientific American, 14 Aug. 2025
Noun
Among this fast-growing class of undesirables was Loktev’s friend Anna Nemzer, a talk-show host for TV Rain (and a co-director on the film). Justin Chang, New Yorker, 14 Aug. 2025 Sunlight was weaponized against these undesirables. Sam Bloch august 8, Literary Hub, 8 Aug. 2025 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 22 Aug. 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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