1
2
3
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

4
5

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 Symptoms of infant botulism include constipation, difficulty feeding, weak or altered cries, poor head control and other signs of muscle weakness. Nicole Nixon, Sacbee.com, 9 Nov. 2025 And his influence over Kingstown’s drug trade could be just as weak, now that Detroit mob boss Frank Moses has taken Bunny under his wing. Noel Murray, Vulture, 9 Nov. 2025 The government's case is weak and circumstantial. Charlotte Phillipp, PEOPLE, 9 Nov. 2025 Haigian's downgrade comes after CarMax last week announced a weak preliminary outlook for the current quarter and said CEO Bill Nash was unexpectedly stepping down. Sean Conlon,liz Napolitano, CNBC, 9 Nov. 2025 See All Example Sentences for weak
Recent Examples of Synonyms for weak
Adjective
  • The illness can be dangerous or life-threatening, particularly to older adults, those with weakened immune systems and pregnant women.
    Fernando Cervantes Jr, USA Today, 7 Nov. 2025
  • But babies, people with weakened immune systems, and those with chronic lung conditions are more likely to get seriously sick, developing illnesses like bronchiolitis or pneumonia.
    Evan Moore November 5, Charlotte Observer, 5 Nov. 2025
Adjective
  • Another noteworthy development is Arts Landing, a four-acre city park in Downtown Pittsburgh featuring public art, greenery and performance space set to soft open in April 2026.
    Natalia Senanayake, PEOPLE, 10 Nov. 2025
  • For the white colorway, a contrasting gum sole with a soft suede toe highlights the sneaker, while the black version features a brown distressed tooling.
    Stephen Garner, Footwear News, 10 Nov. 2025
Adjective
  • At Paradromics, researchers have developed a chip with thinner wires than the Utah array, something that reduces, but does not eliminate, the damage done to brain tissue.
    Jeffrey Kluger, Time, 6 Nov. 2025
  • This recipe calls for fresh tomatillos, which look like small green tomatoes wrapped in thin papery skin.
    Patricia S York, Southern Living, 6 Nov. 2025
Adjective
  • Officers are able to use loitering laws as general warrants to circumvent individuals’ constitutional right to be protected from unreasonable searches and seizures, Wood said.
    Alex Brizee, Idaho Statesman, 10 Nov. 2025
  • The class counsel has argued that objectors are raising either points that were already decided, inappropriate for this forum, or unreasonable to address.
    Daniel Libit, Sportico.com, 5 Nov. 2025
Adjective
  • People eventually outgrow the helpless-baby stage.
    Anna Louie Sussman, The Atlantic, 7 Nov. 2025
  • Without money and without a means to earn it, women are helpless to determine the course of their own lives.
    Literary Hub, Literary Hub, 6 Nov. 2025
Adjective
  • And honestly, what could be more feeble?
    Literary Hub, Literary Hub, 7 Nov. 2025
  • Their calculations show that a feeble interaction between the inflaton field and elementary particles called gluons would be sufficient to warm up inflation.
    Stephanie Pappas, Scientific American, 27 Oct. 2025
Adjective
  • Hospitals became a backstop for complications and for the frailest cases, while communities worked to strengthen local food sources.
    The New Yorker, New Yorker, 5 Nov. 2025
  • But in young children, frail or elderly people, and those with weakened immune systems, Listeria can be deadly.
    Jenna Anderson, Health, 3 Nov. 2025
Adjective
  • 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
  • For example, Wilson’s team is exploring whether dilute acids speed up weathering.
    Robert F. Service, Science | AAAS, 3 Sep. 2020

Browse Nearby Words

Cite this Entry

“Weak.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weak. Accessed 23 Nov. 2025.

More from Merriam-Webster on weak

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!