decades of development decades of experience decades of history decades of life decades of neglect decades of political decades of progress decades of research decades of service decades of the twentieth decades of war decades of work decades old decades passed decades past decades saw decades that followed decades to come decades will decades-long decades-old decaduro decaf decaf coffee decaf latte decaffeinated decaffeinated coffee decaffeinated tea decagon decagonal decahydrate decaillon decal decalcification decalcified decalcifier decalcify decalcifying decalin decalogue decals decameron decamp decamped decan decanate decane dečani decanoate decanoic acid dečanski decant decantation decanted decanted off decanter decanter centrifuge decanters decanting decapod decapolis decarbonisation decarbonise decarbonization decarbonize decarbonizing decarboxylase decarboxylated decarboxylation decarburization decarie décarie decarlo décary decathlete decathlon decathlon team decatur decay decay and death decay can decay chain decay constant decay heat decay over time decay process decay product decay products decay rate decay rates decay time decay will decayed decaying decaying body decaying flesh decaying orbit decaying organic decaying plant