'opportune' originates from Latin, specifically the word 'opportunus,' where 'ob-' meant 'toward' and 'portus' meant 'harbor.'

'opportunus' transformed into the Old French word 'opportun,' and eventually became the modern English word 'opportune' through Middle English.

Initially, it meant 'coming toward a harbor,' but over time it evolved into its current meaning of 'suitable or convenient.'