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 In that sense, the effort to avoid appearing wrong can weaken decision-making. Paul Wachtel, The Conversation, 31 Mar. 2026 Throughout Tuesday morning, severe thunderstorm warnings were issued for parts of Juneau, Fond du Lac, Green Lake and Adams counties and later canceled after the storms weakened. Maia Pandey, jsonline.com, 31 Mar. 2026 And yet…the bond markets rallied yesterday on the prospect that the Fed may be more afraid of weakening GDP growth than inflation. Jim Edwards, Fortune, 31 Mar. 2026 Iran’s Ministry of Science said at least 21 universities have been damaged in strikes since the war began, and academics themselves have been targeted, in what Tehran claims is an attempt to weaken the country’s scientific and cultural foundations. Adam Pourahmadi, CNN Money, 31 Mar. 2026 See All Example Sentences for weaken
Recent Examples of Synonyms for weaken
Verb
  • The most flattering colors visually soften the skin and enhance its natural beauty.
    Andrea Carbajal, Glamour, 31 Mar. 2026
  • On the other hand, taupe bags work just as well with bold color pairings, softening them with a sense of ease.
    Minty Mellon, Vogue, 31 Mar. 2026
Verb
  • The leader of the Ex-Slave Pension Association was later imprisoned on mail fraud charges, and the organization faded away, while the Eagles became one of the pressure groups that eventually led to Social Security.
    Trevor Jackson, The New York Review of Books, 4 Apr. 2026
  • Pensions faded, and a new system of 401(k) retirement savings rewarded Americans for working longer.
    Daniel de Visé, USA Today, 4 Apr. 2026
Verb
  • When this idea is diluted, government expands its ambition to curate the public’s consciousness.
    George F. Will, Washington Post, 3 Apr. 2026
  • Now, Perez said branches are leaving the union because of high turnover in retail banking, which dilutes the original union-supporting staff and allows the company to re-educate new hires with anti-union talking points.
    Chase Jordan April 2, Charlotte Observer, 2 Apr. 2026
Verb
  • That night, Kane was injured, and Carsley tried to pick the boldest, most talented team possible, with Jude Bellingham nominally up front, and Foden, Palmer, Gordon and Bukayo Saka in, too.
    Jack Pitt-Brooke, New York Times, 1 Apr. 2026
  • The conditions for the three people injured in the shooting wasn't immediately available.
    Siafa Lewis, CBS News, 31 Mar. 2026
Verb
  • While lightweight sleepers may not notice much impact, heavier sleepers will likely find their mattresses sag more quickly.
    Sharon Brandwein, USA Today, 3 Apr. 2026
  • Wrinkles, sun spots and sagging skin have become so demonized, that even teenagers — decades away from this reality — and increasingly men, previously exempt from this ruinous beauty standard, have started to fear, anticipate and prepare for their arrival.
    Leah Dolan, CNN Money, 2 Apr. 2026
Verb
  • Symptoms typically appear within one to two weeks after becoming infected and may include fever, headache, rash, and body aches.
    Julie Sharp, CBS News, 2 Apr. 2026
  • Young ticks frequently feed on these mice and become infected.
    Emily Bache, The Conversation, 31 Mar. 2026
Verb
  • For others with the condition, flare-ups can involve additional symptoms that are extremely painful or even debilitating.
    Korin Miller, SELF, 31 Mar. 2026
  • After missing almost two full years with a debilitating back and then an ACL injury, Melton has been one of the Warriors’ most impactful players since returning in early December.
    Joseph Dycus, Mercury News, 30 Mar. 2026
Verb
  • In the video, Woods can be seen wearing a blue polo shirt and leaning against the patrol car while failing the sobriety tests.
    Alaa Elassar, CNN Money, 3 Apr. 2026
  • In other words, when a job requires multiple steps, creativity, or precision, AI replacements are more likely to fail than succeed.
    Tristan Bove, Fortune, 3 Apr. 2026

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Cite this Entry

“Weaken.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weaken. Accessed 7 Apr. 2026.

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