decay, decompose, rot, putrefy, spoil mean to undergo destructive dissolution. decay implies a slow change from a state of soundness or perfection.

DECAY definition: 1. to become gradually damaged, worse, or less; to cause something to do this: 2. If a radioactive…. Learn more.

Decay has wide application but often suggests partial deterioration short of complete destruction: "A decaying dam is an accident waiting to happen" (George Black).

decay, decompose, rot, putrefy, and spoil mean to slowly fall apart and become destroyed by natural processes. decay is the most general of these terms. It often suggests a slow change from a state of …

Dec 14, 2025 · decay (third-person singular simple present decays, present participle decaying, simple past and past participle decayed) (intransitive) To deteriorate, to get worse, to lose strength or …

There are 13 meanings listed in OED's entry for the noun decay, six of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Decay is also a noun. When not removed, plaque causes tooth decay and gum disease.

Definition of decay noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Decay, decompose, disintegrate, rot imply a deterioration or falling away from a sound condition. Decay implies either entire or partial deterioration by progressive natural changes: Teeth decay.

Decay, decompose, disintegrate, rot imply a deterioration or falling away from a sound condition. Decay implies either entire or partial deterioration by progressive natural changes: Teeth decay.