'alonely' originates from Middle English, specifically the word 'aloon,' where 'al-' meant 'all' and 'oon' meant 'one.'

'aloon' transformed into the modern English word 'alonely' through the addition of the suffix '-ly' to form an adjective.

Initially, it meant 'all alone,' but over time it evolved into its current meaning of 'feeling alone or lonely.'