'chared' originates from English, specifically the verb 'char', which developed as a shortening of 'charwoman' (a woman employed to do household cleaning).

'char' developed in modern English as a clipped form of 'charwoman' in the 18th–19th century, and the verb past form became 'chared'.

Initially associated with the noun meaning 'a woman employed to do cleaning', it came to be used as the verb 'to do cleaning or small household tasks', and 'chared' is the past/past participle of that verb.