Definition of weaknext
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as in thin
not containing very much of some important element the coffee came out too weak because I didn't use enough ground beans

Synonyms & Similar Words

Antonyms & Near Antonyms

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Synonym Chooser

How does the adjective weak contrast with its synonyms?

Some common synonyms of weak are decrepit, feeble, fragile, frail, and infirm. While all these words mean "not strong enough to endure strain, pressure, or strenuous effort," weak applies to deficiency or inferiority in strength or power of any sort.

felt weak after the surgery

When is it sensible to use decrepit instead of weak?

The synonyms decrepit and weak are sometimes interchangeable, but decrepit implies being worn-out or broken-down from long use or old age.

the dowager's decrepit retainers

In what contexts can feeble take the place of weak?

Although the words feeble and weak have much in common, feeble suggests extreme weakness inviting pity or contempt.

a feeble attempt to walk

When might fragile be a better fit than weak?

While in some cases nearly identical to weak, fragile suggests frailty and brittleness unable to resist rough usage.

a reclusive poet too fragile for the rigors of this world

When is frail a more appropriate choice than weak?

The meanings of frail and weak largely overlap; however, frail implies delicacy and slightness of constitution or structure.

a frail teenager unable to enjoy sports

Where would infirm be a reasonable alternative to weak?

The words infirm and weak are synonyms, but do differ in nuance. Specifically, infirm suggests instability, unsoundness, and insecurity due to old age or crippling illness.

infirm residents requiring constant care

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 weak Although a weak yen raises the value of exports’ earnings when converted into yen, a boon for Japan’s giant exporters, that positive is starting to be countered by the big negative of rising energy prices. ABC News, 1 July 2026 The firm is on track to double its Gulf revenue this year despite the impact of the Iran war and weaker spending on consultants in Saudi Arabia, Colie Spink, A&M’s managing director and regional head for the Middle East, said in an interview. Matthew Martin, semafor.com, 1 July 2026 An agent operating on weak prediction models is just a faster way to spend badly. Phoena Pang, Forbes.com, 1 July 2026 In addition to the levee, men stood watch every 1,000 feet along the Missouri River from the Kaw to the Blue River to report weak spots in the flood wall or potential threats to the pumping station. Kansas City Public Library Staff, Kansas City Star, 1 July 2026 See All Example Sentences for weak
Recent Examples of Synonyms for weak
Adjective
  • And while Creger still thought the bill was positive, she was disappointed to see the weakened language around adding lanes to highways.
    Ariane Lange, Sacbee.com, 25 June 2026
  • The weakened plants are more susceptible to insects and disease pests.
    Kim Toscano, Southern Living, 25 June 2026
Adjective
  • Recreational swimming is not permitted, yet anglers fishing for tilapia, largemouth bass and carp are a common sight along the rocky sides of the soft-bottom areas.
    Mack Baysinger Follow, Los Angeles Times, 27 June 2026
  • That first bite delivers the crispy outside with a soft chew of rice, followed by the hot dog.
    Justin Brown, AJC.com, 27 June 2026
Adjective
  • The water pressure then causes the vehicle to rise and slide on a thin layer of water between the tires and the road, making the driver lose control.
    NC Weather Bot, Charlotte Observer, 23 June 2026
  • Tree was recognizable for his bright fashion, mullet haircut with prominent bangs, thin mustache and encouraging outlook.
    Dennis Romero, NBC news, 22 June 2026
Adjective
  • If these requirements are not met, the search is unreasonable and therefore unlawful, and evidence obtained in that search cannot be used in court, barring a good-faith exception.
    Anne Toomey McKenna, The Conversation, 30 June 2026
  • Justices ruled that sweeping use of cellphone data requires a warrant, a decision applying the Fourth Amendment, which protects against unreasonable searches and seizures, to new technology.
    Josh Feldman, NBC news, 30 June 2026
Adjective
  • But when his son Naseer was born in May 2025, Ajas Ahmed had never felt so helpless.
    Kamala Thiagarajan, NPR, 21 June 2026
  • Over the course of a 60-yard run, Maradona danced past opponents, escaped challenges and left English defenders helpless before beating the goalkeeper with a clinical finish.
    Cesar R. Torres, The Conversation, 17 June 2026
Adjective
  • Jolted by a feeble office market, a growing number of developers are considering ways to convert their office properties to other uses, such as housing projects.
    George Avalos, Mercury News, 17 June 2026
  • Enervated cuteness and tryhard sincerity define a whole new wave of musicians, from Pittsburgh rockers feeble little horse to cringe-pop upcycler Worldpeace DMT to SoundCloud producer MASSI, whose songs spill with the tiny adorable detail of a toy train set.
    Kieran Press-Reynolds, Pitchfork, 15 June 2026
Adjective
  • Listeria is an organism that can cause serious and sometimes fatal infections in young children, frail or elderly people, or others with weakened immune systems.
    Greta Cross, USA Today, 19 June 2026
  • But the job market in California remains frail, said Michael Bernick, an employment attorney with law firm Duane Morris and a former director of the state EDD.
    George Avalos, Mercury News, 19 June 2026
Adjective
  • But dwarf galaxies are smaller and colder, with more dilute and slower-moving matter.
    Paul M. Sutter, Scientific American, 6 May 2026
  • Second, a dilute hydrochloric acid is used to dissolve the remaining lithium and the transition metals—nickel, cobalt, and manganese.
    Aman Tripathi, Interesting Engineering, 12 Oct. 2025

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Cite this Entry

“Weak.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weak. Accessed 3 Jul. 2026.

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