Noun
absence of mind (uncountable)
A state or the quality of being absent-minded (abstracted, preoccupied). [First attested in the early 18 century.]
Your absence of mind we have borne, till your presence of body came to be called in question by it. Charles Lamb
We seem, as it were, to have conquered and peopled half the world in a fit of absence of mind. John Robert Seeley