When it comes to synonyms for the phrase "A plus", there are several words and phrases that fit the bill perfectly. Some of the most popular synonyms for "A plus" include outstanding, excellent, superb, top-notch, first-class, and exceptional. These words all convey a sense of excellence and superiority, just like the phrase "A plus". Other synonyms for "A plus" might include phrases such as "top of the class", "of the highest quality", or "first-rate". Ultimately, the most important thing is to choose the synonym that best conveys your intended meaning, whether you're writing a paper, conducting a job interview, or simply trying to express your appreciation for something.