forgetfulness has definitions from the field of psychology
1
[ noun ] (psychology) tendency to forget

Used in print

(Nathan Rapport, ""I've Been Here before!"...)

The degree of circumstance , the ratio of memory to forgetfulness , determines whether a dream will be a recognized , fulfilled prevision , or the vaguely , effective source of the weird deja_vu feeling .

(John Cheever, "The Brigadier and the Golf Widow,"...)

There are , he thought , so few true means of forgetfulness in this life that why should he shun the medicine even when the medicine seemed , as it did , a_little crude ?

(Hampton Stone, The Man Who Looked Death...)

Maybe one could be startled into forgetfulness .

Related terms

amnesia senior_moment

2
[ noun ] (psychology) unawareness caused by neglectful or heedless failure to remember

Examples

"his forgetfulness increased as he grew older"

*