To some indeterminate place; to some place or other; to somewhere(adverb)
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Use "somewhither" in a sentence
"As she drew nigher yet, she saw that there were folk on the walls of it, and they seemed to see her, for a horn was winded from the battlement, and folk were running together to somewhither."
"So came they, three hours after noon, to where was a clearing in the woodland, and a long narrow plain some furlong over lay before them, with a river running along it, and the wood rose on the other side high and thick, so that the said plain looked even as a wide green highway leading from somewhence to somewhither."
"Said Habundia: Well now, that she wendeth somewhither in this ferry I wot; but as I wot not whither, so also I know not what she doth with the Sending Boat to make it obey her; whereas, though I know all things of the wood, I know but little of the lake."