'condemnable' originates from Latin, specifically the word 'condemnare' (via Old French/Anglo-French), where 'con-' meant 'together' and 'damnare' (or 'dare' in some analyses) meant 'to condemn or doom'.

'condemnable' was formed in English from the verb 'condemn' (Middle English from Anglo-French 'condamner', from Latin 'condemnare') with the adjective-forming suffix '-able', producing the modern English adjective 'condemnable'.

Initially related to the Latin sense of 'sentencing or condemning', over time it evolved into the modern sense 'deserving condemnation' or 'blameworthy'.