Does one have an obligation to show honor to an uncle by standing up, etc.? Is this brought down in halacha?
Answer:
There is no formal obligation to honor one's uncle. The obligations of honor apply to one's parents, grandparents, older brother, and parent-in-law (according to some opinions). However, although the formal halachos of standing up, and so on, do not apply, one's uncle should be honored as an elder family member.