Noah Webster
Forgetfulness
FORGET'FULNESS, noun
1. The quality of losing the remembrance or recollection of a thing; or rather, the quality of being apt to let any thing slip from the mind.
2. Loss of remembrance or recollection; a ceasing to remember; oblivion.
A sweet forgetfulness of human care.
3. Neglect; negligence; careless omission; inattention; as forgetfulness of duty.