DECOMPOSITION Synonyms: 18 Similar and Opposite Words

decomposition

noun

as in decay

the process by which dead organic matter separates into simpler substances the unmistakable smell of decomposition led us to some fruit that had fallen behind the refrigerator

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

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 decomposition The octopus had been preserved in formaldehyde, which halts decomposition. —

Avni Trivedi, CNN Money, 27 May 2026 Depending on soil temperature and moisture, the number of microorganisms in the soil, and the carbon content of the wastes, decomposition will occur in one month to one year to feed plant root systems. —

Mary Marlowe Leverette, Southern Living, 24 May 2026 Keep the mulch a few inches away from plant stems or bases to prevent them from getting damaged during decomposition of the grass clippings. —

Megan Hughes, Better Homes & Gardens, 21 May 2026 Excessive fly activity indicates decomposition is already underway, at which point the fruit's condition is as much the concern as the flies themselves. —

Anne Wolf, Martha Stewart, 13 May 2026 Brian Eckenrode, a retired FBI forensic scientist and expert in human decomposition, joined them in 2021. —

Richard Winton, Los Angeles Times, 10 May 2026 Authorities have not answered questions about what prompted the search, but scientists specializing in human decomposition and soil took samples from the ground. —

ABC News, 8 May 2026 Use in hydrogen transportation The five-metal nanocrystals have proven effective in accelerating ammonia decomposition, a process vital for the hydrogen energy economy. —

Mrigakshi Dixit, Interesting Engineering, 7 May 2026 Compost is that rich mixture of various nitrogen-rich materials — grass clippings, vegetable scraps, eggshells, tree leaves and more — after decomposition by microorganisms breaks them down. —

Charles Selle, Chicago Tribune, 6 May 2026

Recent Examples of Synonyms for decomposition

Noun

The right-hand side of the picture is dominated by an enormous red-brick arch in a moderate but evident state of decay.

— Tyler Green, The Atlantic, 21 May 2026
Rates below 10 to 12 percent raise immediate red flags about list decay or inflated subscriber numbers.

— Lien De Pau, Forbes.com, 18 May 2026