English
regressionism
From regression + -ism.
Formed from regression + -ism
Latin regressio
English regression
Today it means
noun A tendency toward regression.
Sources
Sources: Wiktionary, “regressionism”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / regressionism