Forgetfulness

noun

1. The character or state of being forgetful; proneness to let past experience and knowledge slip from the mind.
2. The state of having passed from remembrance or recollection; the fact of having ceased to be remembered; oblivion.
3. Neglect; negligence; careless omission; inattention.
4. Synonyms Obliviousness, etc. See oblivion.
5. The quality of being forgetful; prononess to let slip from the mind.