'allhallowtide' originates from Old English, specifically the words 'ealra hālgena tīed,' where 'ealra' meant 'all,' 'hālgena' meant 'saints,' and 'tīed' meant 'time.'

'ealra hālgena tīed' transformed into the Middle English word 'allhalowentide,' and eventually became the modern English word 'allhallowtide'.

Initially, it meant 'the time of all saints,' but over time it evolved into its current meaning of 'the period including All Saints' Day, All Souls' Day, and Halloween.'