The word "questionist" refers to someone who asks questions frequently. If you want to use a different term with the same meaning, there are various options to choose from. One synonym for "questionist" is "inquirer," which refers to someone who is curious and seeks answers by asking questions. Another synonym is "interrogator," which has a slightly more aggressive connotation and usually implies that the person is questioning someone else. "Questioner" is a simpler alternative that describes someone who poses inquiries to others. "Queryer" is another synonym with a similar meaning, though it is less commonly used. Overall, there are many alternative words to choose from if you want to describe someone who enjoys asking questions.