'repositionable' originates from Modern English, specifically formed from the verb 'reposition' + the adjective-forming suffix '-able', where 're-' meant 'again' and '-able' meant 'able to be'.

'reposition' changed from Latin 'reponere' (re- + ponere) through Medieval/Latin-derived formations (e.g. Late Latin repositio) and Middle English adaptations, and eventually became the Modern English verb 'reposition', to which '-able' was added to form 'repositionable'.

Initially, the root meant 'to place back or again' (from Latin 'reponere'), but over time it broadened to mean 'to place in a different position'; the adjective now means 'able to be moved or placed elsewhere'.