Where does “paroxismus” come from?

paroxismus (Ecclesiastical Latin) comes from Ancient Greek πᾰροξῠσμός, from Ancient Greek πᾰροξῡ́νω, from Ancient Greek πᾰρᾰ-, from Ancient Greek παρά, from Latin verēdus, from Gaulish werēdos, from Proto-Celtic *uɸoreidos — horse.

Ancestry of “paroxismus”, step by step

StepLanguageWordMeaning
1Ancient Greekπᾰροξῠσμόςirritation, exasperation
2Ancient Greekπᾰροξῡ́νωto urge, prick, spur on, stimulate
3Ancient Greekπᾰρᾰ-near; next to; by, near
4Ancient Greekπαρά
5LatinverēdusA fast or light breed of horse; courier's horse; hunter
6Gaulishwerēdoshorse
7Proto-Celtic*uɸoreidoshorse

Words derived from “paroxismus

Every word from Proto-Celtic *uɸoreidosEvery word from Ancient Greek πᾰρᾰ-Every word from Gaulish werēdos