Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* vulgātor (volg-), ōris, m. [2. vulgo], one that makes a thing generally known, a publisher. divulger: taciti, i. e. Tantalus, who divulged the secrets of the gods, Ov. Am. 3, 7, 51.