Absenteeism(n.) The state or practice of an absentee; esp. the practice of absenting one's self from the country or district where one's estate is situated.
Thesaurus Entries
AWOL, French leave, abscondence, absence without leave, absentation, absenteeism, absenting, beggary, cut, day off, dearth, default, defect, defectiveness, deficiency, deficit, departure, deprivation, destitution, disappearance, drought, emptiness, escape, excused absence, exigency, famine, fleeing, furlough, holiday, hooky, imperfection, impoverishment, inadequacy, incompleteness, insufficiency, lack, leave, leave of absence, leaving, miss, necessity, need, negation, negativeness, negativity, nihility, nonappearance, nonattendance, nonbeing, nonentity, nonexistence, nonoccurrence, nonreality, nonsubsistence, not-being, nothingness, nullity, omission, paucity, privation, running away, sabbatical leave, scantiness, scarcity, shortage, shortcoming, shortfall, sick leave, starvation, truancy, truantism, unactuality, unexcused absence, unreality, vacancy, vacation, vacuity, vacuum, void, want, wantage