The word "un-sighted" refers to something that has not been seen or observed before. Its antonyms are words like visible, seen, observed, or noticed, which describe things that can be observed or perceived through the senses. Other antonyms for "un-sighted" include apparent, conspicuous, evident, and clear. These words indicate that something has been observed or is readily observable. On the other hand, some antonyms for "un-sighted" can refer to things that are deliberately hidden or kept out of sight, such as hidden, concealed, or obscured. Ultimately, the choice of antonym for "un-sighted" will depend on the context and intended meaning of the word.