'alliable' originates from the Latin word 'alligare,' where 'ad-' meant 'to' and 'ligare' meant 'to bind.'

'alligare' transformed into the Old French word 'allier,' and eventually became the modern English word 'ally,' from which 'alliable' is derived.

Initially, it meant 'to bind or unite,' and over time it evolved into its current meaning of 'capable of being allied or united.'