Where does “conservationist” come from?

Conservationist derives from English conservation plus the suffix -ista from Latin, -ιστής from Ancient Greek, -ίζω from Ancient Greek, and ultimately Proto-Indo-European -idyé-, -idyéti, and -yéti.

conservationist (English): A person who maintains natural areas or protects...

Definitions

A person who maintains natural areas or protects...

Ancestry of “conservationist”, step by step

Step	Language	Word	Meaning
1	English	-ist	Added to words to form nouns denoting
2	Old French	-iste	—
3	Latin	-ista	-ist; one who practises or believes
4	Ancient Greek	-ιστής	Alternative form of -τής; -ist
5	Ancient Greek	-τής	Appended to verbs to form agent nouns
6	Proto-Hellenic	-tās	—

Every word from Proto-Hellenic -tās →Every word from English -ist →Every word from Ancient Greek -τής →