The phrase "appeal for" is commonly used when describing a request or call to action. To avoid repetition in your writing, it's important to have a range of synonyms that convey similar meaning. Some alternatives to "appeal for" include: plead for, implore for, ask for, request for, seek for, solicit for, call for, summon for, urge for, beg for, petition for, and entreat for. By using these synonyms interchangeably, your writing can remain fresh and varied whilst still conveying the intended message. It's a great way to demonstrate a versatile vocabulary and sophisticated writing skills.