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sickly

American  
[sik-lee] / ˈsɪk li /

adjective

  • sicklier,
    comparative
  • sickliest
    superlative
  1. not strong; unhealthy; ailing.

    Synonyms:
    infirm, feeble, sick, puny, weak, frail
  2. of, connected with, or arising from ill health.

    a sickly complexion.

  3. marked by the prevalence of ill health, as a region.

    the epidemic left the town sickly.

  4. causing sickness.

  5. nauseating.

  6. maudlin and insipid; mawkish.

    sickly sentimentality.

  7. faint or feeble, as light or color.


adverb

  1. in a sick or sickly manner.

verb (used with object)

sicklied, sicklying
  1. to cover with a sickly hue.

sickly British  
/ ˈsɪklɪ /

adjective

  1. disposed to frequent ailments; not healthy; weak

  2. of, relating to, or caused by sickness

  3. (of a smell, taste, etc) causing revulsion or nausea

  4. (of light or colour) faint or feeble

  5. mawkish; insipid

    sickly affectation

"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

adverb

  1. in a sick or sickly manner

"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

Other Word Forms

Derived Forms

Inflected Forms

Adjectives

Etymology

Origin of sickly

1300–50; Middle English siklich, sekly (adj.). See sick 1, -ly

Explanation

If you're frequently ill, or often under the weather, you're sickly. A sickly child tends to miss a lot of school. Sickly people aren't in perfect health — they are prone to coming down with illnesses, or they just generally don't feel well. You can also describe someone as appearing sickly, if their faces are pale and unhealthy-looking. This "habitually ailing" meaning dates from the fourteenth century, and for a brief time it was also used to mean "causing illness."

Keep Reading on Vocabulary.com

Vocabulary lists containing sickly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He is still haunted by cases where sellers could not be located, or the team arrived too late, finding the creatures either dead or so sickly they died soon after rescue.

From Barron's ● Sep. 10, 2026

The railroads advertised the L.A. climate as a last resort for the world’s sickly.

From Los Angeles Times ● Sep. 9, 2026

There is something genuinely quite heartbreaking about watching Panettiere, a young woman just coming to understand Hollywood industry standards, repeat the sickly refrains of a similarly demanding profession.

From Salon ● Aug. 18, 2026

Smog compromised the health of kids and the sickly and the elderly.

From Los Angeles Times ● Mar. 26, 2026

General Gage had ordered that no bells were to be rung for funerals, for fear the rebels should know how sickly lay the city.

From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume II: The Kingdom on the Waves" by M.T. Anderson

He’s big, menacing and worthy to own, but I would have preferred his older, sicklier version in which he acted as a caretaker for Professor X in the film “Logan.”

From Washington Times ● May 29, 2019

The Greek lamp of Monarchism, which has been burning with an ever sicklier flame, went out.

From Time Magazine Archive

The Count's face had turned sicklier and uglier as his friend had continued to speak.

From The Bright Face of Danger Being an Account of Some Adventures of Henri de Launay, Son of the Sieur de la Tournoire by Robert Neilson Stephens

The Jesuit, whiter and sicklier than before, murmured that he would go and rest after his journey, and with eyes steadily cast down he walked away.

From Helbeck of Bannisdale — Volume II by Mrs. Humphry Ward

Leslie swallowed hard; his face became overspread with a sicklier pallor.

From Rainbow's End by Rex Ellingwood Beach

It’s a family joke that they have the sickliest pets in history.

From Washington Post ● Dec. 15, 2021

A bunged-up court system made foreclosure all but impossible, so owners of even the sickliest of companies could spend lavishly without fear of repercussions.

From Economist ● Apr. 19, 2018

This is also a bank that marketed complex derivatives to Europe’s sickliest bank, Monte dei Paschi in Italy.

From New York Times ● Dec. 30, 2016

Healthiest section of the U. S. from the typhoid aspect is New England; sickliest, the east south-central region.

From Time Magazine Archive

Silent rooms, low voices, lowered blinds, long days of loneliness, and of the sickliest kind of sympathy, had not tamed a spirit which was swift and headlong to a fault.

From Robert Browning by G. K. (Gilbert Keith) Chesterton

The town -- the greater Bay Area, for that matter -- is sicklied o'er with restaurants.

From Time Magazine Archive

Oh, nothing, I'm just a little sicklied o'er ...

From Time Magazine Archive

They are Reds who have been, if not sicklied o'er, at least noticeably bleached, if not by the pale cast of thought, then by the bright sun of circumstance.

From Time Magazine Archive

In the middle of a second act seance various ectoplasmic entities wander about the darkness sicklied o'er with the pale cast of greenish spotlights.

From Time Magazine Archive

Aurelia Orestilla sat near him, on a low cushioned stool, with her superb Italian face livid and sicklied by unusual dread.

From The Roman Traitor, Vol. 2 by Henry William Herbert

And therefore West, after an hour of delightful tête-à-tête in the charming little back parlor, stiffened himself up, his brow sicklying o'er with the pale cast of disagreeable thought, and began to make it.

From Queed by Raymond Moreau Crosby

No sicklying taint of sorrow overlies the lucid lake of liquid love, upon which, hand in hand, Aline and I are to float into eternity!

From The Complete Plays of Gilbert and Sullivan by Sir W. S. (William Schwenck) Gilbert

Growing quite staid in manner, the weight of India adding gravity to his looks, sicklying his young face o'er with pale cast of thought.

From Punch, or the London Charivari, Volume 102, May 7, 1892 by Various

He imagined the first beginnings of suspicion; he saw it filming the eyes of his acquaintances, then of his friends, and at last sicklying over the face even of his brother Silas.

From Two Days' Solitary Imprisonment 1898 by Edward Bellamy

They believe that on public occasions the chuprassies have sometimes the power of sicklying them o'er with the pale cast of neglect.

From Twenty-One Days in India; and, the Teapot Series by George Robert Aberigh-Mackay

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