Simple past tense and past participle of regress.(verb)
That has been subject to regression(adjective)
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Use "regressed" in a sentence
"BETHANY MARSHALL, PSYCHOANALYST: Well, I think he might be what we call a regressed pedophile, which is an adult, when he is having a difficult time in his life, regresses back to spending time with children."
"SAUNDERS: Well, I believe that his behavior suggests he ` s what we call a regressed or fixated pedophile, that he enters into a childlike state, except that he ` s a grown-up man and he has sexual urges."
"Werth, Nickels 'last first-rounder, has regressed from a promising pro start and was recently demoted from Class AA to A. No-hit day: Aug. 3 was a day for pitching with a perfect game in the Class A Midwest League and no-hitter in the AA Southern"