Antonyms for the word "more pinned" would be "less pinned", "unpinned", or "looser". These words describe the opposite of being firmly secured or fastened in place. "Less pinned" refers to having fewer attachments or restraints, while "unpinned" denotes complete freedom of movement. "Looser" implies a less restricted or tight hold. These antonyms may be used in different contexts, such as fashion, construction, or sports. In fashion, for example, "less pinned" might refer to a more flowing or relaxed outfit, while "unpinned" might mean an item of clothing without buttons or clasps.