Meniscuses, also known as menisci, are crescent-shaped pieces of cartilage found in the knee joint. While there are no exact antonyms for meniscuses, there are words that represent the opposite idea. For example, instead of a dense, fibrous structure, the opposite could be a soft, pliable one. Words that might contrast with meniscuses include things like liquid or gel, since those substances have a completely different consistency and texture. Additionally, rather than curved or crescent-shaped, the opposite could be straight or linear. Ultimately, the antonyms for meniscuses are more about juxtaposition of structure, texture, and shape, rather than precise linguistic opposites.