Where does “psychoterapeutka” come from?

psychoterapeutka (Polish) comes from Polish psychoterapeuta, from Polish terapeuta, from French thérapeute, from Ancient Greek θεραπευτής, from Ancient Greek -τής, from Ancient Greek πεῖρα, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “psychoterapeutka”, step by step

StepLanguageWordMeaning
1Polishpsychoterapeutapsychotherapist
2Polishterapeutatherapist
3Frenchthérapeutetherapist
4Ancient GreekθεραπευτήςOne who waits upon another; attendant
5Ancient Greek-τήςAppended to verbs to form agent nouns
6Ancient Greekπεῖραtrial, experiment, attempt
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Ancient Greek -τής