Where does “ferdaug” come from?

ferdaug (Norwegian Nynorsk) comes from Old Norse ferðugr, from Old Norse ferð, from Proto-Germanic fardiz, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “ferdaug”, step by step

Step	Language	Word	Meaning
1	Old Norse	ferðugr	ready
2	Old Norse	ferð	journey; conduct, behaviour
3	Proto-Germanic	fardiz	journey, voyage
4	Proto-Indo-European	per-	before, in front; first; to go through
5	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Germanic fardiz →