Where does “ordugud” come from?

ordugud (Middle Irish) comes from Old Irish ord, from Latin ōrdō, from Proto-Italic ored(h)- — to arrange.

Ancestry of “ordugud”, step by step

Step	Language	Word	Meaning
1	Old Irish	ord	order, sequence; arrangement, state, way, course,...
2	Latin	ōrdō	—
3	Proto-Italic	ored(h)-	to arrange