Word.ws English Dictionary

Past tense of decay

regular verb

The past tense of decay is decayed. The past participle is also decayed.

Forms of decay

Base form (V1)decay /dɪˈkeɪ/
Past tense (V2)decayed /dɪˈkeɪd/
Past participle (V3)decayed /dɪˈkeɪd/
Present participledecaying
Third person singulardecays /dɪˈkeɪz/

Decayed in a sentence

  • Damaged on lift-off, Skylab was left in orbit until its orbit decayed.2009, Francis Lyall, Paul B. Larsen, Space Law: A Treatise, page 120
  • The cat's body decayed rapidly.
  • The dentist pulled out the decayed tooth and put in a bridge.From the entry bridge
  • The decayed remains of the pilot's shirt showed where the plane had been shot down.From the entry decayed
  • The settlement is circumvallated by a stake-fence, so decayed that one may gain ingress at a dozen places.2004, David Mitchell, Cloud Atlas, London: Sceptre (Hodder and Stoughton), →ISBN. From the entry circumvallate

Meaning of decay

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

Full definition of decay

Questions about the past tense of decay

What is the past tense of decay?
The past tense of decay is decayed.
What is the past participle of decay?
The past participle of decay is decayed.
Is decay a regular or irregular verb?
Decay is a regular verb: its past tense adds -ed.

Source and license

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.

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