the.com/official

means Relating to a role, decision, or document that carries the sanctioned authority of a government, institution, or office.

from From Latin officialis, 'pertaining to duty or service,' rooted in officium, 'duty, service, obligation' — itself likely a blend of ops ('work, effort') and facere ('to do'). An officium was originally the performance of a task owed to someone else; by the time it reached English through French in the medieval period, an 'official' was simply a person who held a duty-bound post. The sense drifted from the person doing the duty to the stamp of authority behind what they did.