ill

adjective10

1. •
   sick, or not in good health

   • I've been ill with the flu for the past few days.
   • Sue made herself ill through overwork.
2. •
   Nauseated; having an urge to vomit.

   • Seeing those pictures made me ill.
3. •
   Indicative of unkind or malevolent intentions; harsh, cruel.

   • He suffered from ill treatment.
4. •
   Unpropitious, unkind, faulty, not up to reasonable standard.

   • ill manners; ill will
5. •
   (slang) Sublime, with the connotation of being so in a singularly creative way.

   • This is the illest beat I've ever heard.
6. •
   (slang) Extremely bad (bad enough to make one ill). Generally used indirectly with to be.

   • That band was ill.
7. •
   (old-fashioned) Unwise; not a good idea.

   • They arrested everybody—and it is ill to resist a drunken Tommy with a loaded rifle! — 1914
8. •
   (Appalachia) Bad-tempered.
9. •
   (no longer used) Evil; wicked (of people).

   • St. Paul chose to magnify his office when ill men conspired to lessen it. — 1709
10. •
    (no longer used) Morally reprehensible (of behaviour etc.); blameworthy.

    • ‘Go bring her. It is ill to keep a lady waiting.’ — 1999

noun5

1. •
   Harm or injury.

   • I wouldn't want you to do me ill.
2. •
   Trouble; distress; misfortune; adversity.

   • Music won't solve all the world's ills, but it can make them easier to bear.
3. •
   A physical ailment; an illness.

   • I am incapacitated by rheumatism and other ills.
4. •
   Evil; moral wrongfulness.

   • Strong virtue, like strong nature, struggles still, / Exerts itself, and then throws off the ill. — 1675
5. •
   (US, slang) PCP, phencyclidine.

adverb1

1. •
   Not well; imperfectly, badly

   • Such jealousy ill becomes her; she can ill afford another gaffe like that.

verb1

1. •
   (slang, old-fashioned) To behave aggressively.

   • D.M.C.: You been illin' lately. Run: So, I'm illin'. Am I illin'? Chillin'! You know what I'm sayin'? Chillin'. — 1985

noun1

1. •
   Initialism of interlibrary loan.

noun1

1. •
   Abbreviation of Illinois: a state of the United States.