The words that can be used as antonyms for the term "most called-for" include unpopular, overlooked, neglected, unfashionable, unfavored, unwanted, and unasked for. These words describe an opposite in the sense that they represent what is not in demand or not preferred among people. Often, these words find application in the areas of fashion, cuisine, or culture where certain things may appeal to a small section of people only. Overall, the antonyms of "most called-for" can be used in situations where one needs to convey the idea of things being least-preferred or not in high demand.