| noun | an often persistent bodily disorder or disease; a cause for complaining |
| adjective | affected by an impairment of normal physical or mental function “ill from the monotony of his suffering” |
| adjective | resulting in suffering or adversity “ill effects” |
| adjective | distressing “ill manners” |
| adjective | indicating hostility or enmity “you certainly did me an ill turn” |
| adjective | presaging ill fortune; ; ; - P.B.Shelley “ill omens” |
| adverb | (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well “he was ill prepared” |
| adverb | unfavorably or with disapproval “tried not to speak ill of the dead” |
| adverb | with difficulty or inconvenience; scarcely or hardly “we can ill afford to buy a new car just now” |
| ail | verb | cause bodily suffering to and make sick or indisposed |
| illness | noun | impairment of normal physiological function affecting part or all of an organism |
| sick | noun | people who are sick |
| sickness | noun | impairment of normal physiological function affecting part or all of an organism |
| inauspiciousness | noun | the quality of suggesting an unsuccessful result |
| omen | noun | a sign of something about to happen |