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ill Meaning & Definition

ˈil

What Does Ill Mean?

Ill is an adjective that means not in good health. It is also used to mean nauseated. As an adverb, it means in a faulty, inefficient, insufficient, or unpleasant manner. As a noun, it means misfortune, distress.

Ill: Key Facts

Part of speechadjective, adverb, noun, abbreviation, geographical name
Pronunciation/ˈil/
Synonymslight, distress and giddy
Antonymsgood, well and settled

Ill Definition (Adjective)

  1. not in good health

    staying home because I'm ill

  2. nauseated
  3. not normal or sound

    ill health

  4. causing suffering or distress

    ill weather / subjected to ill treatment

  5. unfriendly, hostile

    comments that caused some ill feelings

  6. not suited to circumstances or not to one's advantage : unlucky

    an ill omen

  7. involving difficulty : hard
  8. attributing evil or an objectionable quality

    held an ill opinion of his neighbors

  9. resulting from, accompanied by, or indicative of an evil or malevolent intention

    ill deeds

  10. immoral, vicious
  11. not meeting an accepted standard

    ill manners

  12. notably unskillful or inefficient

Ill as an Adverb

  1. in a faulty, inefficient, insufficient, or unpleasant manner
  2. in an unfortunate manner : badly, unluckily

    Ill fares the land … where wealth accumulates, and men decay.

  3. hardly, scarcely

    can ill afford such extravagances

  4. so as to reflect unfavorably

    spoke ill of the neighbors

  5. with displeasure or hostility

    … took it ill that this request should be made to her …

  6. in a harsh manner
  7. in a reprehensible manner

    … a man of bad character, who had used her ill …

Ill as a Noun

  1. misfortune, distress

    did not wish ill on anyone

  2. ailment, sickness

    had a cure for every ill

  3. something that disturbs or afflicts : trouble

    economic and social ills

  4. something that reflects unfavorably

    spoke no ill of him

  5. the reverse of good : evil

Ill as an Abbreviation

  1. illustrated; illustration; illustrator

Abbreviation

  1. Illinois

Ill as a Geographical Name

  1. river 129 miles (208 kilometers) long in northeastern France flowing into the Rhine River

Adjective

  1. of more inferior quality, value, or condition
  2. more unfavorable, difficult, unpleasant, or painful
  3. more faulty, unsuitable, or incorrect
  4. less skillful or efficient
  5. bad, evil, or corrupt in a greater degree : more reprehensible
  6. being in poorer health : sicker

Adverb

  1. in a worse manner : to a worse extent or degree
  2. what is worse

Adjective

  1. most corrupt, bad, evil, or ill

    his worst fault

  2. most unfavorable, difficult, unpleasant, or painful

    the worst news / your worst enemy

  3. most unsuitable, faulty, unattractive, or ill-conceived

    has the worst table manners

  4. least skillful or efficient

    the worst person for the job

  5. most wanting in quality, value, or condition

    the worst results

Adverb

  1. to the extreme degree of badness or inferiority

    the worst dressed person

  2. to the greatest or highest degree

    … groups who need the subsidies worst lose out …

Synonyms of Ill

Ill synonyms and antonyms →

Antonyms of Ill

goodwellsettledhealthyanodynebenignharmlesshurtlessinnocentinnocuousinoffensivesafeadvantageousbeneficialusefulfavorablepropitiouscurativehealthfulhelpfulpalliativeremedialsalubrioussalutarywholesomesecuresoundbenignantnoncorrosivenondestructivenonfatalnoninfectiousnonlethalnonpoisonousnonpollutingnontoxicnonvenomoushalewholeable-bodiedconditionedfitwell-conditionedcuredbetterconvalescingimprovedmendingrecoveringrecuperatingrehabilitatedhardyheartylustyrobustruggedstalwartstrongtoughbloomingbouncingchipperflourishingflushthrivingacceptableadequateall rightdecentfineOKpassablerespectablesatisfactorystandardtolerableclassicclassicalA1bang-upbannerbosscapitalchoicecrackerjackdandydivineexcellentfabulousfirst-classfirst-rategrandgreatgroovyheavenlyhigh-testjim-dandykeenmarvelousmeanneatniftynoblepar excellenceperfectpremiumprimesensationalslicksplendidstellarsterlingsuperbsuperiorsuperlativesupernalswellterrifictip-toptoptop-notchunsurpassedwonderfulexceptionalfancyhigh-gradespecialsufficientaverageborderlinefairmediocremiddlingminimalso-sounexceptionalsuitableworthygratifyingsatisfyingunthreateningauspiciousbrightencouraginggoldenhearteninghopefulpromisingprosperousclementlygentlylenientlylightlymildlysoftlybenevolentlybenignantlyconsideratelycordiallygraciouslykindlylovinglytenderlycharitablycompassionatelyhumanelymercifullysoftheartedlysympatheticallytolerantlyunderstandinglyabsolutelycertainlycompletelydefinitelypositivelysurelyawfulawfullyenormouslyexceedinglyextremelygreatlyhighlyhugelyimmenselymightilymightymostquiteterriblyveryassuredlyclearlyhands downperfectlyplainlyreallytrulyunequivocallyunquestionablyutterlydoubtlessmore or lessmostlyratherslightlysomewhathealthwellnessfitnesshealthinessheartinessrobustnesssoundnesswholenesswholesomenessfettleshapemoralityrightvirtuedecencygoodnesshonestyintegrityprobityrectitudeuprightnessrighteousnessvirtuousnessfortuneluckserendipitybreakchanceflukegodsendhitopportunitystrikestrokewindfallaccomplishmentachievementsuccess

Ill in a Sentence

Music won't solve all the world's ills, but it can make them easier to bear.

I wouldn't want you to do me ill.

I am incapacitated by rheumatism and other ills.

He suffered from ill treatment.

ill manners; ill will

I've been ill with the flu for the past few days.

Seeing those pictures made me ill.

That band was ill.

staying home because I'm ill

ill health

ill weather

subjected to ill treatment

comments that caused some ill feelings

an ill omen

held an ill opinion of his neighbors

ill deeds

ill manners

Ill fares the land … where wealth accumulates, and men decay.

can ill afford such extravagances

spoke ill of the neighbors

… took it ill that this request should be made to her …

… a man of bad character, who had used her ill …

did not wish ill on anyone

had a cure for every ill

economic and social ills

spoke no ill of him

his worst fault

the worst news

your worst enemy

has the worst table manners

the worst person for the job

the worst results

the worst dressed person

… groups who need the subsidies worst lose out …

she grew ill from the constant rocking motion of the boat

one of the ill effects of winter weather is the rapid spread of germs as people spend more time together indoors

since I'm ill, I guess that I'll just have to miss that dental appointment

such ill behavior will not be tolerated

the abrupt breakdown of negotiations appears to be an ill omen for this ongoing hostage situation

in those days society treated debtors very ill, even going so far as to put them in prison

you can ill afford to miss another day of work

chicken pox and the other ills that were once a fixture of childhood

idealistic people who try to cure all of our society's ills

the travelers merrily set off on their journey, scarcely imagining the ills that would befall them

ill weather / subjected to ill treatment

the worst news / your worst enemy

Word Forms & Grammar

worse

worst

ill

iller

illest

worser

ills

Ill

bad

badly

illy

Words That Rhyme With Ill

Origin of Ill

Origin 1: Middle English, from Old Norse illr

Origin 2: Middle English werse, worse, from Old English wiersa, wyrsa; akin to Old High German wirsiro worse

Origin 3: Middle English werste, worste, from Old English wierresta, wyrsta, superlative of the root of Old English wiersa worse

First Known Use

12th century

13th century

before 12th century

Questions People Ask About Ill

Is ill an adjective or an adverb?

Ill is mainly used as an adjective, but it can also be used as an adverb, a noun, an abbreviation and a geographical name.

What is another word for ill?

Close synonyms of ill are light, distress and giddy. See the full list of ill synonyms and antonyms.

What is the opposite of ill?

Words opposite in meaning to ill are good, well, settled and healthy.

Merriam-WebsterReference content from Merriam-Webster’s Collegiate® Dictionary and Collegiate® Thesaurus © Merriam-Webster Inc.Data credits & licensing