The word "airbrained" is often used to describe someone who is forgetful or absent-minded. However, there are many other words that can be used as synonyms for this term. Some of these include scatterbrained, flighty, ditzy, absent, spacey, and unfocused. Each of these words describes a person who may struggle with remembering important details or staying focused on a task. It's important to note that these terms should be used with caution, as they can be perceived as negative or insulting. Instead, it may be more helpful to approach someone who is struggling with attention and memory concerns with empathy and support.