Synonyms for ill

modified

1. Bad

   evil, harmful, injurious, noxious, hostile, unkind, unfavorable, unpropitious, unfortunate, adverse; see also wicked 1.

2. Sick

   unwell, unhealthy, ailing; see sick. See syn. study at sick, wicked.

go ill with

take ill

1. become sick, become unwell, fall ill;

2. take offense, resent, be annoyed at, be offended by;

noun

1. Anything causing pain, distress, etc.

   harm, misfortune, mischief, trouble; see evil 2, insult, wrong 1, 2.

2. Sickness

   ailment, malady, affliction; see disease.