absence

noun

1. A state of being away or withdrawn from a place or from companionship; the period of being away.“Absence makes the heart grow fonder.”
2. Failure to be present where one is expected, wanted, or needed; nonattendance; deficiency.
3. Lack; deficiency; nonexistence.“He had an absence of enthusiasm.”
4. Inattention to things present; abstraction (of mind).“absence of mind”