Where does “cyfarwyddwyr” come from?

cyfarwyddwyr (Welsh) comes from Welsh cyfarwyddo, from Welsh cyfarwydd, from Welsh cyf-, from Middle Welsh kyu-, from Proto-Brythonic köβ̃-, from Proto-Celtic kom-, from Proto-Indo-European ḱóm, from Proto-Indo-European ḱe — to bend; curve; arch; vault; to bow, bend, arch,...

Ancestry of “cyfarwyddwyr”, step by step

cyfarwyddwyr traces back through two separate lines of ancestry.

via Welsh cyfarwyddo

StepLanguageWordMeaning
1Welshcyfarwyddoto lead, to direct; to instruct, to advise; to...
2Welshcyfarwyddwell-informed, acquainted, familiar; learned,...
3Welshcyf-together, co-, con-; equal, similar, equi-;...
4Middle Welshkyu-con-, with
5Proto-Brythonicköβ̃-Prefix with associative meaning
6Proto-Celtickom-with, together
7Proto-Indo-Europeanḱómbeside, near, by, with
8Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
9Middle Englishkyt
10Germankittputty certain kinds of cement used for fixing e.g. window panes
11Old High Germankuti
12Proto-West Germanickwidugum, resin
13Proto-Germanickweduzresin
14Proto-Indo-Europeangʷet-resin, gum; to say, speak
15Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via Welsh ŵyr

StepLanguageWordMeaning
1WelshŵyrSoft mutation of gŵyr; grandson, grandchild
2Middle WelshwyrSoft mutation of gwyr
Every word from Proto-Indo-European gū-