Where does “pseŭdo-” come from?

pseŭdo- (Esperanto) comes from Ancient Greek ψευδής, from Ancient Greek -ής, from Proto-Indo-European -ēs, from Proto-Indo-European -ess, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

pseŭdo- (Esperanto): pseudo-, false, not genuine, fake

Definitions

pseudo-, false, not genuine, fake

Ancestry of “pseŭdo-”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ψευδής	lying, false, untrue; deceived, beguiled
2	Ancient Greek	-ής	adjective suffix
3	Proto-Indo-European	-ēs	Primarily forms adjectival bahuvrīhi compounds
4	Proto-Indo-European	-ess	—
5	Proto-Indo-European	-os	Creates action nouns or result nouns from verbs;...

Words derived from “pseŭdo-”

pseŭdoscienco
pseŭdoscienca
pseŭdoscience

Every word from Proto-Indo-European -os →Every word from Ancient Greek -ής →Every word from Ancient Greek ψευδής →