'checkability' originates from English, specifically from the verb 'check' combined with the suffix '-ability' (from French '-abilité' via Latin '-abilitas'), where 'check' originally came from Old French 'eschec' and related medieval forms meaning 'a check' and later developed senses of 'to stop, restrain' and 'to examine or verify'.

'check' changed from Old French 'eschec' (from Medieval Latin 'scaccus', originally related to 'shah' in chess) and eventually became the modern English verb 'check'; the productive English suffix '-ability' derives from French '-abilité' and Latin '-abilitas', forming nouns denoting 'the quality of being ...', which produced 'checkability'.

Initially, 'check' had senses tied to 'a check' (as in chess) and 'stopping or restraining'; over time the verb sense 'to examine, verify, or test' became common, and 'checkability' developed to mean 'the quality of being able to be checked or verified'.