Someone who divulges or reveals information, particularly in a formal or official capacity.
From Latin divulgare + -tor (agent suffix indicating one who performs an action). The -tor suffix is Latin in origin and is similar to the English -er but sounds more formal and classical.
Divulgator is the fancier Latin-based version of divulger—English has this neat quirk where we often inherit two versions of the same word, one from simple Anglo-Saxon roots (-er) and one from fancy Romance language roots (-tor), which is why 'teacher' and 'instructor' both exist.
Complete word intelligence in one call. Free tier — 50 lookups/day.