Great question!
In the past have used words like spaced out and tunnel vision, distracted, OCD kicking in, later learned to use health "excuses", migraine (even when I didn't have one, but when people acted as if there was something wrong with me),
Got into the whole idea of submissive/dominant personalities a few years back, so embraced those terms for a while.
As I age I realize how much of the way we operate in this world, our happiness, our creating our own life, getting what we want, depends on the thoughts/words we use internally, so continue to develop new lists to fit my belief of who I am, and now care less about explaining myself to others unless it would benefit me for them to understand me more because I realized (and continue to realize) how much of who I am when interacting with others is based on some stance of being apologetic. Trying to get rid of that attitude entirely.