To rot is to decompose, or break down into smaller parts. When old food at the back of your refrigerator rots, you should throw it away.

Sometimes you can tell when something is beginning to rot because it smells bad. But the process that occurs when things rot is a natural one that you can see all around you as you walk through the woods or along the beach. Living organisms have to rot after they die, to make room for more organisms.

Definitions of rot
  1. verb
    break down
    synonyms: decompose, molder, moulder
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    break down naturally through the action of biological agents
    suspend (meat) in order to get a gamey taste
    type of:
    decay, degrade
    undergo decay or decomposition
  2. verb
    become physically weaker
    synonyms: waste
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    gangrene, mortify, necrose, sphacelate
    undergo necrosis
    type of:
    degenerate, deteriorate, devolve, drop
    grow worse
  3. noun
    a state of decay usually accompanied by an offensive odor
    synonyms: putrefaction
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    corruption, putrescence, putridness, rottenness
    a state of progressive putrefaction
    type of:
    an inferior state resulting from the process of decaying
  4. noun
    (biology) the process of decay caused by bacterial or fungal action
    synonyms: decomposition, putrefaction, rotting
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    type of:
    the process of gradually becoming inferior
  5. noun
    unacceptable behavior (especially ludicrously false statements)
    synonyms: buncombe, bunk, bunkum, guff, hogwash
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    obscene words for unacceptable behavior
    type of:
    drivel, garbage
    a worthless message
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