When trying to describe someone who is scatterbrained or scattered, there are a variety of synonyms that can be used in place of "scattiest". Some possibilities include flaky, disorganized, flighty, absent-minded, spacey, unfocused, random, erratic, haphazard, and sporadic. Each of these words offers slightly different connotations and shades of meaning, but they all convey the idea of someone who has difficulty staying on task or concentrating on one thing at a time. Whether it's a result of a busy mind, a lack of attention to detail, or simply a carefree personality, these synonyms can help paint a picture of someone who is always on the move and never seems to slow down.