Ditzy is a colloquial term used to describe someone who is scatterbrained, forgetful, or absent-minded. It is often associated with women and is considered to be a derogatory term. However, there are several synonyms that can be used to describe such traits in a more respectful way. Some of these synonyms include flighty, frivolous, scatterbrained, absent-minded, whimsical, capricious, and careless. While these terms may still carry a negative connotation, they are less likely to offend and may be more appropriate in certain contexts. Regardless of the word choice, it is important to avoid making derogatory comments about a person's intelligence or personality.