'horror' originates from Latin, specifically the word 'horrere,' where 'horrere' meant 'to bristle or shudder.'

'horrere' transformed into the Old French word 'horror,' and eventually became the modern English word 'horror' through Middle English.

Initially, it meant 'to bristle or shudder,' but over time it evolved into its current meaning of 'intense fear or aversion.'