regressionist
nounEtymology From regression + -ist.
1
One who promotes or follows regressionism.
- This politician is a regressionist who disregards what people care about now.
2
One who travels back in time.
- She, too, was a past-life regressionist. I asked, “Do you remember if you had a lifetime in connection with Nazi Germany?” She replied, “Oh, I thought you knew. I was a prison warden at Auschwitz. […]2010, Denise Linn, Past Lives, Present Miracles:
3
One who carries out regressions, inducing a patient to act out behaviour typical of an earlier developmental stage.