ailing, bad, bedridden, below par, confined, critically ill, disabled, donsie, down, down with, faint, faintish, feeling awful, feeling faint, feeling rotten, feeling something terrible, hors de combat, hospitalized, ill, in a bad way, in danger, incapacitated, infirm, invalid, laid low, laid up, low, mean, mortally ill, not oneself, not quite right, not very well, not well, obdurate, off-color, on the blink, on the sick list, out of action, out of commission, out of order, out of sorts, peaked, poorly, queasy, rocky, seedy, sick, sick unto death, sickish, sickly, slightly ill, squeamish, taken ill, under the weather, unhealthy, unsound, unwell, valetudinarian