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To decay, or to rot

biodegrade

verb

if a substance biodegrades, bacteria cause it to separate into very small parts so that it is not harmful to the environment

curdle

verb

if milk or another liquid curdles, or if something makes it curdle, lumps begin to form in it

decay

verb

to be gradually destroyed as a result of a natural process of change

decay

verb

if a building or an area decays, its state gradually gets worse because it has not been looked after

decompose

verb

to decay by a slow natural process, especially through the action of particular bacteria or fungi

fester

verb

if food or waste material festers, it starts to decay and smell bad

go off

if food or drink goes off, it is no longer fresh

perish

verb

if a substance such as wood, rubber, or food perishes, it decays and cannot be used

putrefy

verb

to decay

rot

verb

to decay by a gradual natural process, or to make something decay in this way

sour

verb

if something such as milk sours, or if something sours it, it gets an unpleasant taste or smell because it is no longer fresh

spoil

verb

if food spoils, it starts to decay, so that you cannot eat it

turn

verb

if milk turns, it becomes sour

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

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