nonattendance, nonappearance, lack, deficiency, nonexistence, unavailability, void, vacancy, emptiness, omission, default, nonpresence, hiatus, gap, lacuna, missing, absenteeism, truancy, nonparticipa... [more]
nonattendance, nonappearance, lack, deficiency, nonexistence, unavailability, void, vacancy, emptiness, omission, default, nonpresence, hiatus, gap, lacuna, missing, absenteeism, truancy, nonparticipa... [more]