'aroint' originates from Middle English/Scots dialect, specifically the word 'a-roint', where 'a-' meant 'away' and 'roint' functioned as an imperative meaning 'be gone' (original root uncertain).

'aroint' changed from older Scots/Middle English exclamation 'a-roint' and persisted into Early Modern English literature as the archaic form 'aroint' (appearing in period texts as a command or exclamation).

Initially, it meant 'away!; be gone!', but over time it became archaic and is now mainly used in literary or historical contexts with the sense 'to drive away' or 'banish.'