'conjugal' originates from Latin, specifically the word 'conjugalis,' where 'con-' meant 'together' and 'jugum' meant 'yoke.'

'conjugalis' transformed into the French word 'conjugal,' and eventually became the modern English word 'conjugal' through Middle English.

Initially, it meant 'pertaining to a yoke or joining,' but over time it evolved into its current meaning of 'relating to marriage.'