Synonyms and related words :
ailing, ausgespielt, bad, below par, between two fires, cornered, critically ill, done, done up, down, effete, emptied, endangered, exhausted, faint, faintish, far-gone, fatigued, feeling awful, feeling faint, feeling something terrible, frazzled, ill, imperiled, in a predicament, in danger, in desperate case, in extremis, in jeopardy, indisposed, jaded, jeopardized, laid low, mortally ill, not quite right, off-color, on the spot, out of sorts, played out, pooped, rocky, run-down, seedy, shotten, sick, sick unto death, sickish, spent, taken ill, threatened, tired, under the weather, unwell, used up, worn-out