When expressing ideas or concepts, a diverse range of words is crucial to enhance clarity and precision. For the word "unpassivizable", meaning unable to be made passive, various synonyms exist to facilitate effective communication. A substitute term could be "non-transitive", indicating that the action does not pass from subject to object. Furthermore, "non-receivable" aptly conveys the infeasibility of receiving an action. Alternatively, the term "inconvertible" indicates the impossibility of changing from an active to a passive form. By employing these synonyms, writers can convey the desired meaning more effectively, fostering eloquent expression and facilitating seamless comprehension.