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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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a weak position
a vulnerable position
a susceptible position
an insecure position
a fragile position
a poor position
a weak economy
a feeble economy
a vulnerable economy
a fragile economy
an unstable economy
a frail economy
weak signals
poor signals
poor-quality signals
unreliable signals
insufficient signals
inadequate signals
a weak solution
an inconsistent solution
an inadequate solution
an ineffectual solution
a faulty solution
a deficient solution
a weak smile
a feeble smile
a pathetic smile
a faint smile
a limp smile
an unconvincing smile

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 These are usually towels that are thin and stitched with weak, subpar quality threads. Bestreviews, Chicago Tribune, 13 June 2025 Almost all of the countries surrounding Iran have reasons to prefer a weak Iran and to dread a nuclear one. Graeme Wood, The Atlantic, 13 June 2025 Cell membranes are held up by small proteins called microtubules that keep the cell's shape rigid, but when the gravitational force changes — even though gravity on the ISS is only 10% weaker than on Earth — the cell's structure changes with it. Tom Brown, Space.com, 13 June 2025 But many Tea Party nominees proved to be weak general election candidates when running for Senate, delaying Republican control of the upper chamber until 2014. W. James Antle Iii, The Washington Examiner, 13 June 2025 See All Example Sentences for weak
Recent Examples of Synonyms for weak
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, 7 June 2025
  • The warm, sunny weather was helping the thin layer of oil evaporate, and the spill did not seem to harm wildlife, Laughlin said.
    Ethan Wolin, Sacbee.com, 6 June 2025
Adjective
  • The vast majority of post commenters assured the OP that her feelings are completely valid and that her mother is being unreasonable.
    Toria Sheffield, People.com, 7 June 2025
  • But leading the team to the Finals is not an unreasonable request.
    Troy Renck, Denver Post, 6 June 2025
Adjective
  • Her husband said the crash has left him feeling helpless.
    Melissa Chan, NBC news, 8 June 2025
  • Even if a new microorganism adapted to space or some other environment were to cause disease, humans still wouldn’t necessarily be helpless, Adalja said.
    Alex Knapp, Forbes.com, 23 May 2025
Adjective
  • But much like the hug stepped on the larger point of supplementing the military base, images of Whitmer hiding behind the folders added to a narrative that Democrats are feeble in the face of Trump's power and influence.
    Phillip M. Bailey, USA Today, 1 May 2025
  • While Shawna and John were meant to be having a romantic anniversary dinner, Barb showed up unannounced and undermined Jennifer’s already feeble attempts at following the evening routine laid out for the young children.
    Sara Belcher, People.com, 9 May 2025
Adjective
  • In language the rest of us can understand that means a slightly softer and more mellow click that’s quieter and less harsh than teh average mechanical keyboard.
    Mark Sparrow, Forbes.com, 14 June 2025
  • In the play’s most beautiful moments, Smart recites Izzy’s poems in a sweet-bourbon croon—wafting, careful, soft.
    Helen Shaw, New Yorker, 13 June 2025
Adjective
  • Vinegar, which is really dilute acetic acid, will help the milk curdle by further denaturing the whey proteins and neutralizing negative charges at the surface of casein micelles.
    Liz Roth-Johnson, Discover Magazine, 12 Feb. 2013
  • However toxic a substance may be, the amount of exposure received by the general population is very dilute.
    George Johnson, Discover Magazine, 8 July 2013
Adjective
  • To many watching, Elon Musk’s decision to publicly insult President Trump seemed self-destructive, if not outright irrational.
    Joel Shulman, Forbes.com, 8 June 2025
  • And then the irrational with the Tom Thibodeau move.
    Ira Winderman, Sun Sentinel, 5 June 2025
Adjective
  • More recently, in a tragic turn of events, he was left paralyzed from the chest down after being thrown from a horse during a polo tournament last year.
    Peter Aitken Alia Shoaib, MSNBC Newsweek, 8 June 2025
  • In Facility Theatre’s new revival of the Irish playwright’s absurdist tragicomedy, the blind and paralyzed character (played by artistic director Kirk Anderson) looks like a slightly steampunk Scrooge, writes Emily McClanathan.
    Chicago Tribune, Chicago Tribune, 27 May 2025

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Cite this Entry

“Weak.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weak. Accessed 19 Jun. 2025.

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