The word "interpellator" refers to someone who interrupts or questions someone else's speech or actions. Some synonyms for this word include interrogator, questioner, inquirer, examiner, and cross-examiner. All of these terms describe a person who is attempting to get information or insights from another person by asking them questions or challenging their beliefs or actions. Other related words might include inquisitive, nosy, curious, probing, or prying, all of which describe someone who is interested in delving deeply into a topic or situation to uncover more information or insights. No matter what word you choose, the key characteristic of an interpellator is their desire to learn more and to challenge assumptions and beliefs.