'advisor' originates from the Latin word 'advisare,' where 'ad-' meant 'toward' and 'visare' meant 'to look at or consider.'

'advisare' transformed into the Old French word 'aviser,' and eventually became the modern English word 'advise' through Middle English.

Initially, it meant 'to look at or consider,' but over time it evolved into its current meaning of 'to give advice or counsel.'