SICKLY Synonyms: 59 Similar and Opposite Words

sickly

adjective

ˈsi-klē

Definition of sickly

as in frail

chronically or repeatedly suffering from poor health a sickly foal that seemed to catch everything that the other horses had

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in poisonous

bad for the well-being of the body lungs scarred by years of exposure to the sickly air of the coal mines

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of sickly In the heyday of her career, her choppy hair, flat chest, sickly pallor and large darting eyes were a manic pixie dream. — Carly Tagen-Dye, PEOPLE, 3 June 2026 The 2019 post on the notorious image board’s /x/ forum included a disquieting photo of an empty hallway bathed in sickly light. — Miles Klee, Wired News, 30 May 2026 First, the spots appear, then leaves yellow and fall off the plant, and your rose bush turns into a sickly collection of sticks with no flower buds in sight. — Leanne Potts, Better Homes & Gardens, 29 May 2026 If your once-vigorous plant is starting to look sickly, spider mites may be the culprits. — Arricca Elin Sansone, Southern Living, 19 May 2026 See All Example Sentences for sickly

Recent Examples of Synonyms for sickly

Adjective

Though Steinem had recently become more frail physically, her wit and humor remained totally intact.

— ABC News, ABC News, 3 Sep. 2026
In the last decade, Jackson has paid a Miami company more than $35 million to discharge mostly frail patients with nowhere to go into assisted living beds.

— Carol Marbin Miller, Miami Herald, 27 Aug. 2026

Definition of frail

Adjective

But the point was just that Nick’s character is emulating Sheridan’s poisonous corrupted values, and the internet is a vehicle for that relationship.

— Brian Davids, HollywoodReporter, 27 Aug. 2026
For this reason, these poisonous mushrooms are more commonly confused with other types of edible mushrooms like chicken of the woods and chanterelles (more on these in a minute).

— Katie Hill, Outdoor Life, 6 Aug. 2026

Definition of poisonous

Adjective

When their ailing mother comes to live with them, old resentments resurface, forcing both women to confront grief, faith, ambition, and the fragile bonds that hold a family together.

— Zac Ntim, Deadline, 28 Aug. 2026
The characters aren’t simply vulnerable—they’re contradictory and fragile.

— Anna Marie de la Fuente, Variety, 28 Aug. 2026

Definition of fragile

Adjective

Prosecutors argued at trial that Shirilla intentionally drove into the building to end her toxic relationship with Russo and that Flanagan was an unintended victim who happened to be in the car.

— Michael Sinkewicz, FOXNews.com, 2 Sep. 2026
For bouquets, Wahlen recommends choosing one type of flower that has already been identified as non-toxic rather than an arrangement filled with unfamiliar stems and greenery, where a dangerous flower may be tucked among otherwise safe blooms.

— Lauren Paige Richeson, USA Today, 2 Sep. 2026

Definition of toxic

Adjective

Some recalls, Eskin said, are made after companies’ routine testing catches a pathogen before anyone gets sick, while others involve outbreaks that are already underway and vary widely in size and severity.

— Dian Zhang, USA Today, 28 Aug. 2026
Sanchez also ordered a meal from Taco Bell, but didn’t get sick.

— Rebecca Johnson, Chicago Tribune, 28 Aug. 2026

Definition of sick

Adjective

Warnings of unhealthful air quality remained in effect Saturday across a wide swath of the United States due to smoke from Canadian wildfires that has engulfed the Northeast in haze for days.

— Los Angeles Times, Los Angeles Times, 18 July 2026
The soil may contain pathogens, pesticides and other unhealthful things.

— Joan Morris, Mercury News, 9 Feb. 2026

Definition of unhealthful

Adjective

Many African economies are in a much weaker economic position compared to the strong 2015-2016 El Niño, the IIF report said, largely due to higher oil prices, which have driven up transport costs, and a strong US dollar.

— Paige Bruton, semafor.com, 2 Sep. 2026
Too much nitrogen in the spring creates a weak root system that isn’t able to withstand the heat and drought in summer.

— Megan Hughes, Better Homes & Gardens, 2 Sep. 2026

Definition of weak

Adjective

Even the Barbie doll, while often derided for promoting an unhealthy body image for developing children, offered girls a glimpse of a different future than as a wife and mother, Kimmel argues.

— Andrew Silow-Carroll, Sun Sentinel, 31 Aug. 2026
Mental-health professionals have become remarkably good at helping clients identify unhealthy relationships.

— David H. Rosmarin, Time, 29 Aug. 2026

Definition of unhealthy

Browse Nearby Words

sickliness

sickly

sickness

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“Sickly.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sickly. Accessed 5 Sep. 2026.

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Synonyms of sickly

adjective

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