Yellow-horned is a unique and specific term, so finding synonyms can be a little challenging. However, there are several ways to describe something that has a similar appearance or characteristic. For example, something that is yellow-horned might be referred to as "antlered" due to the similarity between antlers and horns. Another option would be to use the term "yellow-tusked" if the object in question had long, pointed protrusions that resembled tusks. Alternatively, one could describe something as "yellow-spiked" or "yellow-pointed" to convey a similar physical attribute. Overall, while there may not be many direct synonyms for yellow-horned, there are several ways to describe a similar feature.