The word patronite is a very rare word and has no direct synonyms. However, depending on the context in which it is used, there may be alternative phrases or words that can be used instead. For instance, if patronite is being used in reference to a patron or supporter of an institution or organization, words like benefactor, supporter, sponsor, or advocate can be used instead. On the other hand, if patronite is referring to the mineral of cobalt sulphide, then synonyms such as cobaltite or smaltite would be more appropriate to use. Ultimately, the choice of synonyms would depend on the intended meaning and context of the word patronite.