Where does “disgynebau” come from?

disgynebau (Welsh) comes from Welsh disgynneb, from Welsh disgyn, from Latin descendo, from Latin de-, from Latin de, from Proto-Indo-European de — Emphatic or contrastive particle, and, but;...

Ancestry of “disgynebau”, step by step

Step	Language	Word	Meaning
1	Welsh	disgynneb	anticlimax, bathos
2	Welsh	disgyn	to descend
3	Latin	descendo	I climb down, to come down, to descend; I march...
4	Latin	de-	of; from
5	Latin	de	The name of the letter "D"; of, concerning,...
6	Proto-Indo-European	de	Emphatic or contrastive particle, and, but;...

Every word from Proto-Indo-European de →Every word from Latin de- →Every word from Latin de →