Synonyms for Scatty (same or very similar meaning)
WordNet sense 1 (lacking sense or discretion):
rattlebrained, scatterbrained, rattlepatedWordNet sense 2 (devoid of good sense or judgment):
foolishWordNet sense 3 (lost in thought; showing preoccupation):
absent, absentminded, abstractedWordNet sense 4 (showing a lack of attention or care):
inattentiveFrom the ODE community, based on WordNetadd/edit