The word "most grouped" implies that something has been categorized or organized together. Therefore, the antonyms for this term would be words that suggest things are separate, scattered or isolated. Some antonyms for "most grouped" could include words like unsorted, disorganized, scattered, dispersed, separated, individual or solitary. These words suggest that items, objects or people are not together, but rather, dispersed or spread out. It is important to use antonyms in language to convey a balanced and accurate description of something, as well as to expand on one's vocabulary and linguistic abilities.