the.com/ombudsman

means An official appointed to investigate and help resolve complaints that ordinary people have against institutions, companies, or government bodies.

from Borrowed from Swedish, where 'ombudsman' means roughly 'representative' or 'agent' — built from 'ombud' (deputy, commission, proxy) and 'man.' Sweden used the term for officials appointed to look after citizens' interests against the state as early as the 19th century, and the word spread into English in the mid-20th century as other countries adopted the role and simply kept the Swedish name, having no tidy equivalent of their own.