When it comes to "simple matters," there are several synonyms that can add variety to your vocabulary. Some options include "basic tasks," "fundamental issues," "routine affairs," "straightforward concerns," and "elementary affairs." Other alternatives may include "practical matters," "everyday concerns," "mundane affairs," or "commonplace tasks." Depending on the tone and context of the situation, there may be other applicable synonyms. Utilizing different synonyms for the same phrase can help make your writing or conversations more interesting and engaging. By expanding your arsenal of synonyms, you can improve your communication skills and better articulate your thoughts and ideas.