'arraignability' originates from Middle English, specifically derived from the verb 'arraign' (Middle English forms such as 'areinen'/'arraignen'), where the Old French/Anglo-French verb (e.g. 'areiner'/'araigner') meant 'to call to court or to accuse'.

'arraignability' developed in English by adding the adjectival/nominal suffixes '-able' and '-ity' to the verb 'arraign' (Middle English 'arein-' forms), evolving through Medieval and Early Modern English into the modern noun 'arraignability'.

Initially associated with the act 'to call before a court' (the verb 'arraign'), it has come to denote the abstract property or condition of being able to be arraigned: 'the quality of being arraignable'.