noun an abnormal state in which development has stopped prematurely.
— synonyms: arrested_development, fixation, infantile_fixation
noun (psychiatry) a defense mechanism in which you flee from reality by assuming a more infantile state.
noun the relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x).
— synonyms: simple_regression, regression_toward_the_mean, statistical_regression
noun returning to a former state.
— synonyms: regress, reversion, retrogression, retroversion