"More avuncular" is an expression commonly used to describe someone who is friendly and kind-hearted, with a helpful nature akin to that of an uncle. If you're looking for synonyms to replace this phrase, you could try words like benevolent, genial, amiable, congenial, affable, or approachable. Each of these adjectives carries the connotation of warmth and approachability that is often associated with avuncular behavior. So, whether you're describing a kind family member or a friendly mentor, any of these synonyms would be appropriate to convey the same qualities as the phrase "more avuncular".