degenerate

vi.恶化, 堕落

defoliate, defoliation, deforest, deforestation, deform, deformation, deformed, deformity, defraud, defray, defrayal, defrock, defrost, deft, deftly, deftness, defunct, defuse, defy, deg, degeneration, degradation, degrade, degree, degrees, dehumanization, -isation, dehumanize, dehumanize, dehumanise, dehydrate, dehydration, deification, deify, deign, deism, deist, deity, deja vu, deject, dejected, dejectedly,