retrogression

the act or an instance of going back to an earlier and lower level especially of intelligence or behavior social instability that has led to a retrogression of moral values and standards of decent behavior Synonyms regression, reversionRelated Words backslide, lapse, relapse; atavism, return; nondevelopment; decline, degenerationNear Antonyms gestation, growth, maturation, ripeningAntonyms advancement, development, evolution, progression