'creep' originates from Old English, specifically the word 'crēopan', where 'crēopan' meant 'to move slowly'.

'crēopan' changed from Old English word 'crēopan' and eventually became the modern English word 'creep'.

Initially, it meant 'to move slowly', but over time it evolved into its current meanings of 'to move quietly' and 'a strange person'.