rot

1 of 2

verb

rotted; rotting

intransitive verb

1
a
: to undergo decomposition from the action of bacteria or fungi
b
: to become unsound or weak (as from use or chemical action)
2
a
: to go to ruin : deteriorate
b
: to become morally corrupt : degenerate

transitive verb

: to cause to decompose or deteriorate with or as if with rot

rot

2 of 2

noun

1
a
: the process of rotting : the state of being rotten : decay
b
: something rotten or rotting
2
a
archaic : a wasting putrescent disease
b
: any of several parasitic diseases especially of sheep marked by necrosis and wasting
c
: plant disease marked by breakdown of tissues and caused especially by fungi or bacteria
3
: nonsense
often used interjectionally
Choose the Right Synonym for rot

decay, decompose, rot, putrefy, spoil mean to undergo destructive dissolution.

decay implies a slow change from a state of soundness or perfection.

a decaying mansion

decompose stresses a breaking down by chemical change and when applied to organic matter a corruption.

the strong odor of decomposing vegetation

rot is a close synonym of decompose and often connotes foulness.

fruit was left to rot in warehouses

putrefy implies the rotting of animal matter and offensiveness to sight and smell.

corpses putrefying on the battlefield

spoil applies chiefly to the decomposition of foods.

keep the ham from spoiling

Examples of rot in a Sentence

Verb The wood had rotted away. The apples were left to rot. the smell of rotting garbage Eating too much candy can rot your teeth. Noun They found a lot of rot in the house's roof. That's a lot of rot!
Recent Examples on the Web
Verb
In addition to sustainability, ACRE outperforms other industry materials by being resistant to water, weather, pests, rot and splintering. Jennifer Castenson, Forbes, 14 Oct. 2024 Chairs roll across a sloped office floor, and the metal-and-wood outer walls of the main building are rusted and rotting. Matt Krupnick, ProPublica, 14 Oct. 2024
Noun
Pathogens including powdery mildew, gray mold, root rot, and stem rots/cankers can be a problem from time to time. Kim Toscano, Southern Living, 5 Sep. 2024 Latour deployed more people to sort grapes this year to ensure any fruit exhibiting mildew, mold, or rot would be discarded. Mike Desimone and Jeff Jenssen, Robb Report, 29 Sep. 2024 See all Example Sentences for rot 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'rot.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Verb

Middle English roten, from Old English rotian; akin to Old High German rōzzēn to rot

First Known Use

Verb

before the 12th century, in the meaning defined at intransitive sense 1a

Noun

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of rot was before the 12th century

Dictionary Entries Near rot

Cite this Entry

“Rot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rot. Accessed 31 Oct. 2024.

Kids Definition

rot

1 of 2 verb
rotted; rotting
1
a
: to decay due to the action of fungi or bacteria
b
: to become unsafe or weak (as from use or chemical action)
2
: to go to ruin
3
: to cause to rot

rot

2 of 2 noun
1
a
: the process of rotting : the state of being rotten
b
: something rotten or rotting
2
a
: a disease of plants or animals marked by the decay of tissue
b
: an area of decayed tissue
pruned the rot from the tree trunk
3
: nonsense sense 1
don't talk rot

Medical Definition

rot

1 of 2 intransitive verb
rotted; rotting
: to undergo decomposition from the action of bacteria or fungi

rot

2 of 2 noun
1
: the process of rotting : the state of being rotten
2
: any of several parasitic diseases especially of sheep marked by necrosis and wasting

More from Merriam-Webster on rot

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