The phrase "two of a kind" represents two people or things that are similar or alike. Therefore, antonyms for this phrase would be words that describe two entities that are different or dissimilar. Some antonyms for "two of a kind" could include "opposites," "pathetic pair," "unrelated duo," "mismatched pair," "incompatible pair," "odd couple," or "dissimilar twosome." These words describe two entities that go against each other rather than working together, showcasing that they do not share any commonalities. While "two of a kind" depicts harmony and similarity, antonyms such as these can show contrast and difference between individuals.