From Longman Dictionary of Contemporary Englishregressre‧gress /rɪˈɡres/ verb [intransitive] technicalMBEHAVE to go back to an earlier and worse condition, or to a less developed way of behaving OPP progress The patient had regressed to a state of childish dependency.→ See Verb table
Examples from the Corpus
regress• It's sort of the way things have regressed.• The tumors regressed and then they appeared to stabilize.• However, with every chime of the mighty Big Ben, the changed woman regresses back to her old villainous ways.• Unable to think of anything else to do, I suggested to Eileen that we tried regressing her to her childhood.• The less compatible a pair the greater the probability that their relationship will regress in the presence of another animal.• This ambivalence may regress into a fatalistic view of herself and her future.• Expected values of birth weight for gestational age were obtained by regressing the natural logarithm of birth weight on gestational age.• When the managers felt insecure or defensive, they regressed to the familiar and comfortable role of producer.Origin regress (1500-1600) Latin past participle of regredi “to go back” 