The state of being elsewhere
truancy, nonattendance, nonappearance, nonresidence,
nonexistence, loss, vacancy, inattentiveness, absenteeism, cut*, hooky*.
Antonyms presence, appearance*, attendance.
The state of lacking something
deficiency, need, lack, inadequacy; see lack 1.
"absence." YourDictionary, n.d. Web. 16 August 2018. <http://thesaurus.yourdictionary.com/absence>.
absence. (n.d.). Retrieved August 16th, 2018, from http://thesaurus.yourdictionary.com/absence
Failure to be present:
The condition of lacking a needed or usual amount: