PROLONGATION Synonyms: 12 Similar and Opposite Words

prolongation

noun

Definition of prolongation

as in extension

the act of making longer the indefinite prolongation of the ceasefire

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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.

Recent Examples of prolongation Also, ibogaine’s prolongation of the heart’s QT intervals carries a real risk of fatal arrhythmia. — Michelle Lhooq, New Yorker, 7 Aug. 2026 The prolongation was 242 days in 2023 and 346 days in 2024, according to the report. — Steve Sadin, Chicago Tribune, 17 Mar. 2026

Recent Examples of Synonyms for prolongation

extension

Noun

That said, the agreement appears to stop short of any concrete purchase commitment, and the two-month trade truce extension appears to be somewhat constrained compared to analysts’ pre-summit expectations of at least six months.

— Anniek Bao, CNBC, 28 Sep. 2026
Suspects arrested under the Terrorism Act 2000 can be detained for up to 14 days without charge, compared to the 24-hour limit for standard arrests, without an extension application.

— ABC News, ABC News, 27 Sep. 2026

Definition of extension

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prolong

prolongation

prolongations

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“Prolongation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/prolongation. Accessed 29 Sep. 2026.

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Synonyms of prolongation

noun

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