Where does “tharaibhse” come from?

tharaibhse (Scottish Gaelic) comes from Scottish Gaelic tharaibh, from Scottish Gaelic thar, from Old Irish tar, from Old Irish a, from Proto-Celtic *ā, from Proto-Indo-European ō — oh, ah.

tharaibhse (Scottish Gaelic): over you; beyond you

Definitions

over you; beyond you

Ancestry of “tharaibhse”, step by step

Step	Language	Word	Meaning
1	Scottish Gaelic	tharaibh	over you; beyond you
2	Scottish Gaelic	thar	over, across; beyond
3	Old Irish	tar	over, across
4	Old Irish	a	nominative/accusative singular neuter of in; that...
5	Proto-Celtic	*ā	O (vocative particle)
6	Proto-Indo-European	ō	oh, ah

Every word from Proto-Indo-European ō →Every word from Proto-Celtic *ā →Every word from Old Irish a →