'forbidder' originates from English, specifically from the verb 'forbid' with the agentive suffix '-er', where 'forbid' meant 'to prohibit' and '-er' denotes 'one who does'.

'forbidder' formed from the Middle English verb 'forbidden' and the suffix '-er', and eventually became the modern English word 'forbidder'.

Initially, it meant 'one who forbids', and this meaning has remained unchanged in modern usage.