If you're looking for synonyms for the phrase "am acquainted," there are several options to consider. Some possibilities include "know," "recognize," "be familiar with," "be aware of," "understand," "acknowledge," and "have knowledge of." Each of these words has a slightly different connotation, so it's important to choose the right one based on the context and tone of your writing. Whether you're writing a professional email, a creative piece of fiction, or something in between, using synonyms can help you express yourself more clearly and effectively. So why not experiment with different words and see how they can enhance your writing?