Definition of weakennext
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Synonym Chooser

How is the word weaken distinct from other similar verbs?

Some common synonyms of weaken are cripple, debilitate, disable, enfeeble, sap, and undermine. While all these words mean "to lose or cause to lose strength or vigor," weaken may imply loss of physical strength, health, soundness, or stability or of quality, intensity, or effective power.

a disease that weakens the body's defenses

When would cripple be a good substitute for weaken?

While in some cases nearly identical to weaken, cripple implies causing a serious loss of functioning power through damaging or removing an essential part or element.

crippled by arthritis

Where would debilitate be a reasonable alternative to weaken?

The words debilitate and weaken can be used in similar contexts, but debilitate suggests a less marked or more temporary impairment of strength or vitality.

the debilitating effects of surgery

When could disable be used to replace weaken?

While the synonyms disable and weaken are close in meaning, disable suggests bringing about impairment or limitation in a physical or mental ability.

disabled by an injury sustained at work

When might enfeeble be a better fit than weaken?

The synonyms enfeeble and weaken are sometimes interchangeable, but enfeeble implies a condition of marked weakness and helplessness.

enfeebled by starvation

How are the words undermine and sap related as synonyms of weaken?

Both undermine and sap suggest a weakening by something working surreptitiously and insidiously.

a poor diet undermines your health
drugs had sapped his ability to think

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 weaken Alabama legislators are hoping to boost the GOP in November’s midterm elections in the wake of last month’s Supreme Court decision weakening the Voting Rights Act. Julian Mark, Washington Post, 11 May 2026 Using hot water on everything can shrink fabrics, fade colors and weaken elastic fibers. Lauren Jarvis-Gibson, Kansas City Star, 11 May 2026 The Supreme Court’s decision last month severely weakening the Voting Rights Act required Louisiana to reconsider a map drawn in 2024 with two majority minority congressional districts that elected Black representatives. John Hanna, Los Angeles Times, 11 May 2026 The Supreme Court sent the cases back to the lower court for further proceedings in light of its landmark ruling last month that weakened the Voting Rights Act. Melissa Quinn, CBS News, 11 May 2026 See All Example Sentences for weaken
Recent Examples of Synonyms for weaken
Verb
  • Soaking sunflower seeds before planting can help with germination as this method softens the naturally hard outer layer of the seed.
    Alexandra Jones, The Spruce, 11 May 2026
  • Justin Sullivan | Getty Images From Domino’s Pizza to Applebee’s, restaurant chains are reporting that sales softened in March as gas prices spiked.
    Amelia Lucas, CNBC, 11 May 2026
Verb
  • In terms of where to beach, wide stretches of sand in Beach Haven remain some of the Jersey Shore’s most desirable, drawing surfers at sunrise, families hauling coolers and striped umbrellas by midday, and sunset walkers lingering until the sky fades pink over the dunes.
    Jessica Chapel, Condé Nast Traveler, 15 May 2026
  • Inside, customers collect passport stamps, browse racks of worn leather and faded denim and line up for limited-edition tote bags tied to the second annual Vintage Store Day.
    Alexandra Harrell, Footwear News, 15 May 2026
Verb
  • By launching a version of the Royal Oak to the general public and transforming it into a playful, versatile pop culture object, the brand is taking a risky step toward diluting its own equity.
    Clara Ludmir, Forbes.com, 15 May 2026
  • Cynical congressional map dilutes Black voting power to target a kingmaker.
    Kathleen Parker, Washington Post, 15 May 2026
Verb
  • The impact ignited an engine fire, injuring a dozen passengers.
    Clara Harter, Los Angeles Times, 13 May 2026
  • Even if Calafiori was not injured, Mosquera’s introduction and Rice’s return to midfield were necessary to start the second half.
    Art de Roché, New York Times, 13 May 2026
Verb
  • Does the couch have a tendency to sag?
    Meg Kernahan, Architectural Digest, 15 May 2026
  • The cushions will stay bouncy thanks to sinuous springs that prevent sagging over time.
    Christina Shepherd McGuire, PEOPLE, 10 May 2026
Verb
  • Of the 25 people who received blood serum testing, one asymptomatic veterinary professional showed evidence of a H5N1 infection after exposure to a cat infected with the disease.
    Christopher Edwards, PEOPLE, 14 May 2026
  • For example, our research suggests that investors would discount a $1 million bond issued by a rural county by nearly $14,000 if that county’s bats have become infected by white-nose syndrome.
    The Conversation, Fortune, 14 May 2026
Verb
  • TIAs are often warning signs that a person is at risk for a more serious and debilitating stroke, according to the National Institute of Neurological Disorders and Stroke.
    Vanessa Etienne, PEOPLE, 11 May 2026
  • Kerr took a leave of absence to recover from debilitating complications following two back surgeries, then missed time again in 2017 with Mike Brown filling in as Kerr underwent a procedure to deal with a spinal fluid leak.
    Janie McCauley, Los Angeles Times, 10 May 2026
Verb
  • In early 2022, after the state failed to pass a ban on such care for minors, Paxton wrote a legal opinion declaring transition care for minors to be child abuse.
    Jo Yurcaba, NBC news, 16 May 2026
  • The city filed a lawsuit saying the federal government failed to perform required reviews of how the project would affect the health and safety of residents and the environment.
    AJ Willingham, AJC.com, 15 May 2026

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Cite this Entry

“Weaken.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weaken. Accessed 18 May. 2026.

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