English
regressor
From regress + -or.
Formed from regress + -or
Proto-Indo-European *gʰredʰ- ‘to walk, go’
Latin gradior ‘to go’
Latin regredior ‘to go back’
Latin regressus
English regress
Today it means
noun Something that regresses, or causes regression.
Sources
Sources: Wiktionary, “regressor”. 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 / regressor