A "mash note" is a term that refers to a romantic, love note that someone writes to their significant other. If you're looking for synonyms for this term, there are plenty of options. Some good alternatives include "love letter," "romantic note," "affectionate message," "sweet nothings," "heartfelt letter," and "amorous memo." Whether you're trying to spice up your relationship with some sweet words, or you're just looking for alternative expressions, using these synonyms can help you convey your feelings in a way that's both heartfelt and meaningful. So take your pick and start writing your mash notes today!