'appropriativeness' originates from Modern English, formed from the adjective 'appropriate' plus the nominalizing suffix '-ness'; 'appropriate' ultimately comes from Latin 'appropriatus' (from 'appropriare'), where the elements include 'ad-' meaning 'to/toward' and 'proprius' meaning 'one's own'.

'appropriativeness' was formed in Modern English by adding the Old English/Proto-Germanic-derived suffix '-ness' to 'appropriate'; 'appropriate' entered English via Late Latin 'appropriatus' (from 'appropriare') through Anglo-French and Middle English, eventually becoming the modern adjective 'appropriate' from which this noun is derived.

Originally, Latin 'appropriare' meant 'to make one's own' or 'to assign to oneself'; over time the root developed senses around 'suitable' or 'proper', and 'appropriativeness' now denotes the quality of being suitable or proper.