'pervade' originates from Latin, specifically the word 'pervadere,' where 'per-' meant 'through' and 'vadere' meant 'to go.'

'pervadere' transformed into the French word 'pervader,' and eventually became the modern English word 'pervade' through Middle English.

Initially, it meant 'to go through,' but over time it evolved into its current meaning of 'to spread through and be perceived in every part of.'