When it comes to finding synonyms for "un-questioning", one could use words such as obedient, submissive, compliant, docile, or unquestioning. All of these words suggest the idea of a person who follows without hesitation or pause, without questioning authority or questioning what they have been told. These terms can be useful in describing a person or group of people who are easily controlled or manipulated. However, it is important to remember that being un-questioning is not always a positive trait and can lead to blind obedience and conformity. As with all language, it is essential to use these words carefully, considering the context in which they are being used.