Most papery is a subjective term, and there are many antonyms that can be used depending on the context of the sentence. A few antonyms that can be used for most papery are sturdy, strong, thick, and durable. If we are talking about paper, then antonyms such as dense, heavy, and thick can also be used. If we are talking about the texture or feel of the material, antonyms like smooth, silky, and slick can be used. In general, antonyms for most papery will vary widely depending on the specific characteristics being compared.