ob·​so·​les·​cent | \ ˌäb-sə-ˈle-sᵊnt How to pronounce obsolescent (audio) \

Definition of obsolescent

: going out of use : becoming obsolete

Other Words from obsolescent

obsolescently adverb

Examples of obsolescent in a Sentence

Recent Examples on the Web Without substantive upgrades or even replacements, these aircraft will start becoming obsolescent by the end of this decade. Paul Iddon, Forbes, 28 Dec. 2021 Buildings and spaces have been rendered obsolescent. Phillip Molnar, San Diego Union-Tribune, 26 Mar. 2021 Vecchio said the engine's hookup to the governor system did not match up due to the obsolescent nature of the parts. Beth Mlady, cleveland, 13 Dec. 2019 Thousands of deficient and structurally obsolescent bridges are languishing across the nation. Sam Wood, Philly.com, 25 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'obsolescent.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of obsolescent

1755, in the meaning defined above

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Time Traveler for obsolescent

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The first known use of obsolescent was in 1755

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Last Updated

11 Jan 2022

Cite this Entry

“Obsolescent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/obsolescent. Accessed 18 Jan. 2022.

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More Definitions for obsolescent



English Language Learners Definition of obsolescent

: no longer useful : becoming obsolete

More from Merriam-Webster on obsolescent

Thesaurus: All synonyms and antonyms for obsolescent

Nglish: Translation of obsolescent for Spanish Speakers


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