Synonyms of decay
1 rotDictionary • The bodies buried in the fine ash slowly decayed.
rot • The grain will start rotting in the silos.
spoil • Fats spoil by becoming tainted.
crumble • Under the pressure, the flint crumbled into fragments.
deteriorate • X-rays are used to prevent fresh food from deteriorating.
perish • The rubber lining had perished.
degenerate • He degenerated into drug and alcohol abuse.
fester • The food will fester and go to waste.
decompose • foods which decompose and rot
moulder • the empty, mouldering old house
putrefy (formal) • the stench of corpses putrefying in the sweltering heat
2 declineDictionary • The work ethic in this country has decayed over the past 30 years.
decline • a declining birth rate
sink • He's still alive, but sinking fast.
diminish • The threat of war has diminished.
dissolve • His new-found optimism dissolved.
deteriorate • There are fears that the situation may deteriorate.
fall off • Unemployment is rising again and retail buying has fallen off.
dwindle • The factory's workforce has dwindled.
lessen • Keep immunisations up to date to lessen the risk of serious illness.
wane • His interest in her began to wane.
1 rotDictionary • Plaque causes tooth decay and gum disease.
rot • Investigations revealed rot in the beams.
deterioration • enzymes that cause the deterioration of food
corruption • The corruption of the body is an unavoidable feature of old age.
decomposition • The bodies were in an advanced state of decomposition.
mortification • He treated cases of infection, ulceration and mortification.
canker • The canker of anti-semitism is growing again in this country.
2 declineDictionary • problems of urban decay and gang violence
decline • Rome's decline in the fifth century.
deterioration • the rapid deterioration in relations between the two countries
decadence • a prime example of the decadence of the age
degeneration • the degeneration of our political system
degeneracy • the moral degeneracy of society
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• The canker of anti-semitism is growing again in this country.
• The corruption of the body is an unavoidable feature of old age.
• Under the pressure, the flint crumbled into fragments. • The chalk cliffs are crumbling.
Thesaurus for decay from the Collins English Thesaurus
to decline or cause to decline gradually in health, prosperity, excellence, etc; deteriorate; waste away