Etymology
The adverb is derived from Middle English there-aboutes, þare aboutes (“of a place or an object: around there, in its vicinity; of time: about then, around that time”) [and other forms], from ther (“in that place, in those places, there; on that; thither, to that place; from there, thence; at that time; thereupon; in that situation, under those circumstances; in that case, with regard to that”) (from Old English þǣr (“there”)) + aboutes (“in all directions, around”, adverb), aboutes (“in all directions from, on all sides of; near; concerned with”, preposition) (from aboute, abouten (“so as to surround; so as to cover; on the border or edge; as measured around the outside; to as to travel around something; so as to revolve about an axis or centre; aside; in all directions; in the vicinity;
Definitions & examples from Wiktionary (CC BY-SA 3.0).