Retiary refers to something that is related to a net or meshwork. Antonyms of this word can include terms like free, open, unobstructed, and straightforward. The opposite of a net or meshwork could be something like a plain or flat surface, which is not characterized by any kind of texture or pattern. The word "retiary" can also refer to a person who works with nets or mesh, so antonyms could include words like non-craftsperson or non-mechanic. A retiary individual may be skilled at weaving, knotting, or otherwise working with nets, so antonyms could include untrained or non-skilled. Ultimately, antonyms for the word "retiary" will depend largely on the context of the sentence or text in which it is used.