'conjunctive' originates from Latin, specifically the word 'conjunctivus,' where 'con-' meant 'together' and 'jungere' meant 'to join.'

'conjunctivus' transformed into the Late Latin 'conjunctivus,' and eventually became the modern English word 'conjunctive' through Old French and Middle English.

Initially, it meant 'joining together,' but over time it evolved into its current grammatical sense of 'serving to connect words or clauses.'