Where does “operer” come from?

operer (Latin) comes from Latin operor, from Latin opera, from Latin Opus, from Ancient Greek Ὀποῦς, from Ancient Greek ὀπός, from Proto-Indo-European sokʷós, from Proto-Indo-European sekʷ- — to follow; to see; to say.

operer (Latin): first-person singular present active subjunctive...

Definitions

first-person singular present active subjunctive...

Ancestry of “operer”, step by step

Step	Language	Word	Meaning
1	Latin	operor	I work, labor
2	Latin	opera	work, exertion, effort; service; care, attention...
3	Latin	Opus	The capital city of the Locri and birthplace of Patroclus
4	Ancient Greek	Ὀποῦς	Opus, Greece
5	Ancient Greek	ὀπός	juice, vegetable/plant juice; fig-juice
6	Proto-Indo-European	sokʷós	juice of plants
7	Proto-Indo-European	sekʷ-	to follow; to see; to say

Every word from Proto-Indo-European sekʷ- →Every word from Proto-Indo-European sokʷós →Every word from Ancient Greek ὀπός →