Plural of decay

regular plural

The plural of decay is decays.

Forms of decay

Uranium decays to radium through a long series of steps with a cumulative half-life of 4.4 billion years.2005, Encyclopedia of Earth Science, edited by Timothy M. Kusky, →ISBN, page 349
When power is sought primarily for private gain, the social fabric decays and unravels.2023 June 25, Charles Hugh Smith, The Corruption of POTUS, SCOTUS and SCROTUS. From the entry gain
In the higher Higgs boson mass domain, the Higgs boson decays dominantly to a pair of b-quarks.2011, Christopher G. Tully, Elementary Particle Physics in a Nutshell, page 255. From the entry Higgs boson
In particular semitauonic B decays can give important constraints on the charged Higgs sector.1998, M. Rozanska, “On a feasibility of measuring exclusive semitauonic B0 decays at B-factories”, in Acta Physica Polonica, volume 29…. From the entry semitauonic
When the moral code that requires service to the public good decays, the legitimacy of the state collapses.2020 November 27, Charles Hugh Smith, Moral Decay Leads to Collapse. From the entry moral code

noun Rot; any processes or result of organic matter being gradually decomposed, especially by microbial action.
noun Deterioration of condition; loss of status, quality, strength, or fortune.
noun Radioactive decay; decomposition of an atom or its nucleus.

What is the plural of decay?: The plural of decay is decays.
Is decay countable?: Decay is usually an uncountable noun; its plural is used for kinds or examples of it.

Adapted from Wiktionary: decay (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Plural of decay.” Word.ws, https://word.ws/plural/decay. Based on Wiktionary, CC BY-SA 4.0.