Finding the right word to describe an action can be challenging, but thankfully, there are plenty of synonyms available that can help convey the desired meaning. When it comes to the phrase "settle upon," several options come to mind. Instead of "settle upon," you could use the phrases "decide," "resolve," "agree upon," or "choose." Other synonyms include "opt for," "settle on," "adopt," "appoint," or "fix upon." By choosing a synonym that feels more natural or specific to the context, you can improve the clarity and specificity of your language, making your writing more engaging and effective.