Antonyms for the word "more unshared" could include something that is open, public, or shared. Extroverted, communicative, or expressive may also be considered antonyms for this phrase, as they signify a willingness to openly express one's thoughts and feelings with others. Social, gregarious, or convivial might also represent the opposite of the phrase, as these words suggest a preference for social interaction and shared experiences. Essentially, any words or phrases that suggest openness, sharing, or socializing could be considered antonyms for "more unshared.