degeneration, decrepitude, rot, degradation, putrefaction, dilapidation, disintegration, deterioration, stasis, atrophy, decadence, decomposition, disintegrating, desuetude, fossilization, stagnation, oxidation, disrepair, degeneracy, efflorescence, impoverishment, erosion, desiccation, cambium, sclerosis, dentine, fossilisation, industrialism, depravation, rusting, ravages, ossification, senescent, yellowing, disuse, destruction, enfeeblement, shabbiness, entropy, ruination, putrescence, petrification, shrinkage, corroding, oxidization, transience, desolation, equilibriums, radioactive decay, atavism, dessication, enervation, dysfunction, stagnancy, dankness, neglect, inhabitance, deprivation, ferment, oxidisation, dullness, florescence, atomisation, civilization, cementum, anomie, dissipation, inanition, epochs, disfiguration, blight, necrosis, inexorability, anarchy, mottling, regrowth, spoilage, wretchedness, inertness, sinkage, carboniferous, demineralization, supersaturation, demoralization, resorption, evanescence, scarring, endlessness, retrogression, immiseration, despoliation, underdevelopment, roughening, temporariness, historicism, fragmentation, frailty, rottenness, philistinism, animality, nothingness, overgrowth, estrangement, decline, exhaustion, alienation, debasement, disorganization, recuperation, dissolution, obsolescence, amelioration, debilitation, disillusionment, transmutation, kinetic, scattering, relaxation, absorption, displacement, creep, nondimensional, polarization, calculated, correlation, excitation, normalised, normalized, propagation, anharmonic, dimensionless, dispersal, pulse, radiative, saturation

break, bust, caries, cavity, corrode, corruption, decompose, decomposition, degenerate, dental caries, deteriorate, deterioration, dilapidation, disintegration, droop, eat at, erode, exponential decay, exponential return, fall apart, gnaw, gnaw at, go bad, impairment, molder, moulder, putrefaction, putrefy, rot, rotting, ruin, rust, spoil, spoilage, spoiling, tooth decay, wear, wear away, wear out, weather, wilt

., alpha decay, alpha radiation, alpha ray, astatine, at, atomic number 85, beta decay, beta particle, beta radiation, beta ray, black locust, black rot, brown rot, caries, carious, cavity, class plectomycetes, cleistocarp, cleistothecium, conserve, corrupt, corruption, crumble, decadent, decayable, decayed, decompositional, delapidate, deliquesce, dental caries, dilapidate, effete, electron radiation, fluoridation, fluoridisation, fluoridization, gamma radiation, gamma ray, genus bacillus, ghoulish, imperishability, imperishingness, imputrescible, in truth, keep up, laterite, maintain, miasma, morbid, nitrogen cycle, oswald spengler, perishable, perishables, plectomycetes, potassium-argon dating, preservation, preservative, preserve, putrefaction, putrefiable, putrefy, putrescible, radiation, radioactivity, root rot, rot, rotted, rotten, rubidium-strontium dating, shielding, sodium fluoride, soft rot, sound, soundness, spengler, spoilable, spoilables, tainted, tooth decay, transmutation, unsoundness, weak force, weak interaction

action, activity, change, change integrity, decrease, decrement, natural action, natural process, nuclear reaction, organic phenomenon, physical phenomenon, unsoundness

crumble, decline, decompose, decomposition, delapidate, disintegrate, disintegration, radioactive decay