Cassocks are long garments typically worn by Christian clergy members, but what are their antonyms? Well, since cassocks are usually associated with religious attire, antonyms for this word could be secular clothing such as shorts, jeans, t-shirts, or other casual items. Another way to think about antonyms for cassocks would be to consider clothing that is opposite in style or function. In this case, antonyms may include uniforms, business suits, or athletic wear. Essentially, any type of clothing that is different in purpose, design, or social context from a cassock could be considered an antonym for this word.