Third person singular present tense of aroint; drives away or banishes.
From 'aroint' with the third person singular suffix '-s,' which evolved from Old English '-eth' or '-th' and was eventually replaced by the modern '-s' ending around the 16th-17th centuries.
When English shifted from '-eth' (as in 'he goeth') to '-s' (he goes), it happened gradually and unevenly—some areas kept '-eth' longer, which is why we see both forms in texts from the same period, showing language change in real time.
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