Where does “pendrist” come from?

pendrist (Welsh) comes from Welsh trist, from Middle Welsh trist, from Old Welsh trist, from Proto-Brythonic *trist, from Latin trīstis, from Proto-Indo-European tristh₂s, from Proto-Indo-European steh₂- — to stand.

pendrist (Welsh): sorrowful, melancholy

Definitions

sorrowful, melancholy

Ancestry of “pendrist”, step by step

pendrist traces back through two separate lines of ancestry.

via Welsh trist

Step	Language	Word	Meaning
1	Welsh	trist	sad
2	Middle Welsh	trist	—
3	Old Welsh	trist	—
4	Proto-Brythonic	*trist	—
5	Latin	trīstis	sad, unhappy, melancholy, morose
6	Proto-Indo-European	tristh₂s	a third party standing, after the two parties to...
7	Proto-Indo-European	steh₂-	to stand

via Welsh pen

Step	Language	Word	Meaning
1	Welsh	pen	head; chief; top, apex
2	Proto-Brythonic	penn	head
3	Proto-Celtic	kʷennom	head

Every word from Proto-Indo-European steh₂- →Every word from Proto-Indo-European tristh₂s →Every word from Latin trīstis →