Answer: sicker

AnswerCrossword Clue
SICKERMore disgusted
SICKERMore likely to stay home from work
sickergruesome
sickerSICK, affected with ill health, also SIC
sickerdependable; trustworthy
sickernot healthy; ill
sickersafe from danger; secure
sickerdeeply distressed
sickernauseated
sickercertainly; without doubt