ill

[ il ]
/ ɪl /

adjective, worse, worst; ill·er, ill·est for 7.

noun

adverb

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Idioms for ill

    ill at ease, socially uncomfortable; nervous: They were ill at ease because they didn't speak the language.

Origin of ill

1150–1200; Middle English ill(e) (noun and adj.) < Old Norse illr (adj.) ill, bad

synonym study for ill

1. Ill, sick mean being in bad health, not being well. Ill is the more formal word. In the U.S. the two words are used practically interchangeably except that sick is always used when the word modifies the following noun: He looks sick ( ill ); a sick person. In England, sick is not interchangeable with ill, but usually has the connotation of nauseous: She got sick and threw up. sick, however, is used before nouns just as in the U.S.: a sick man. 4. See bad1.

grammar notes for ill

See well1.

WORDS THAT MAY BE CONFUSED WITH ill

ill sick1 (see synonym study at the current entry)

Definition for ill (2 of 4)

Origin of ill.

(def 4) < Latin illustrissimus

Definition for ill (3 of 4)

Definition for ill (4 of 4)

I'll
[ ahyl ]
/ aɪl /

contraction of I will.

usage note for I'll

WORDS THAT MAY BE CONFUSED WITH I'll

aisle I'll isle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ill

British Dictionary definitions for ill (1 of 3)

ill
/ (ɪl) /

adjective worse or worst

noun

adverb

Word Origin for ill

C11 (in the sense: evil): from Old Norse illr bad

British Dictionary definitions for ill (2 of 3)

Ill.

abbreviation for

Illinois

British Dictionary definitions for ill (3 of 3)

I'll
/ (aɪl) /

contraction of

I will or I shall
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for ill

ill
[ ĭl ]

adj.

Not healthy; sick.
Not normal, as a condition; unsound.

n.

A disease or illness, especially of animals.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Idioms and Phrases with ill

ill

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.