Answer: illness

AnswerCrossword Clue
ILLNESSA cause of absenteeism
illnesssickness (the state of being sick (affected with ill health, also SIC))
illnessparticular ailment; sickness
illnessthe state of being ill
ILLNESSReason for a note to the teacher
ILLNESSFlu, e.g.
ILLNESSContracted thing
ILLNESSReason for missing work
ILLNESSIt might give you a headache
ILLNESSAbsence justification
ILLNESSIt may leave you weak in the knees
ILLNESSSusan Sontag's "..... as Metaphor"
ILLNESSHypochondriac's preoccupation
ILLNESSCause of absence
ILLNESSIndispostition.
ILLNESSMalady.
ILLNESSIt's contracted
ILLNESSIndisposition
ILLNESSComplaint
ILLNESSEpidemiologist's concern
ILLNESSOne cause of absence
ILLNESSHealth problem
ILLNESSThe flu, for one
ILLNESSReason to miss work
ILLNESSAffliction
ILLNESSMalady