
n. [ L. deterior worse. See Deteriorate. ] Worse state or quality; inferiority. “The deteriority of the diet.” [ R. ] Ray. [ 1913 Webster ]
v. t.
The art of war . . . was greatly deteriorated. Southey. [ 1913 Webster ]
v. i. To grow worse; to be impaired in quality; to degenerate. [ 1913 Webster ]
Under such conditions, the mind rapidly deteriorates. Goldsmith. [ 1913 Webster ]