IPA: /əˈfɪʃ.əl.dəm/
KK: /əˈfɪʃəlˌdʌm/
The group of people who hold official positions in government or public service, often involved in making decisions and policies.
The new policies were met with resistance from the members of officialdom.
Officialdom → It is formed from "official" (from Old French *officiel*, meaning relating to an office or authority) and "-dom" (meaning state or condition). The word "officialdom" refers to the state or condition of being an official or the collective body of officials.
Think of 'official' as relating to authority and '-dom' as a state or condition — together, they describe the collective state of those in authority.