When we say that something is "under-rated," we mean that it is not given the recognition or appreciation it deserves. Some synonyms for this word include undervalued, underestimated, ignored, neglected, and unappreciated. These words express the idea that the worth or importance of something is not fully acknowledged or understood by others. It is important to recognize the value of things that are under-rated, as they may have hidden qualities or potential that is waiting to be discovered. By using these synonyms, we can bring attention to the things that deserve more recognition and appreciation, and begin to give them the credit they deserve.