How to Use weaken in a Sentence

weaken

verb
  • The dollar has continued to weaken against the euro.
  • The beams had been weakened by water damage.
  • The disease weakens the immune system.
  • The disease causes the immune system to weaken.
  • Some are concerned that the increase in taxes will weaken the economy.
  • The recent setbacks have not weakened our resolve.
  • Lower interest rates have weakened the dollar.
  • These kinds of contradictions weaken your argument.
  • Her own heart weakened with age.
    — Marisa Silver september 23, Literary Hub, 23 Sep. 2025
  • This weakens the plant and can cause dieback.
    — Steve Bender, Southern Living, 10 Mar. 2026
  • That heat can cause items in your car to warp, weaken, fade, or worse.
    — Karen Brewer Grossman, Southern Living, 11 June 2026
  • Rent growth also weakened at all price points.
    — Diana Olick, CNBC, 23 Sep. 2025
  • And if ignored, the scales can weaken and even kill your trees.
    — Steve Bender, Southern Living, 10 Sep. 2025
  • First, the skull weakens and distorts sound waves.
    — Kurt Knutsson, FOXNews.com, 2 Mar. 2026
  • Over time, build-up can weaken the seal and cause leaks or drainage issues.
    — Karen Brewer Grossman, Southern Living, 26 Feb. 2026
  • The lack of a deadline can weaken pressure to act.
    — Wafaa Shurafa, Los Angeles Times, 10 Apr. 2026
  • His paws began to knuckle and his back legs weakened.
    — Tereza Shkurtaj, PEOPLE, 2 Nov. 2025
  • But the strict law that ensured that success was weakened this year.
    — Elizabeth Robinson, NBC News, 19 Dec. 2023
  • Acidic and sugar foods and drinks can weaken your tooth enamel over time.
    — Brandi Jones, Verywell Health, 7 Apr. 2026
  • Dim days weaken the whole schedule even when your evenings are perfect.
    — Allison Palmer, Charlotte Observer, 7 May 2026
  • Plant in the fall before the first frost; planting in the spring weakens them.
    — Steve Bender, Southern Living, 22 May 2024
  • Let go of an illusion that weakens you.
    — Magi Helena, Dallas Morning News, 20 Jan. 2026
  • Over the next two to three hours the storms were expected to weaken and move out of the area.
    — Shari Rudavsky, The Indianapolis Star, 19 June 2021
  • But, if the valves weaken or become damaged, blood can pool around them, and the veins bulge.
    — Bryant Stamford, Louisville Courier Journal, 2 Oct. 2025
  • At the same time, leaving grass too long over the winter can shade the soil and weaken the grass.
    — Mary Marlowe Leverette, Southern Living, 31 Oct. 2025
  • The heat can weaken the brush’s adhesive.
    — Cody Godwin, USA Today, 5 Oct. 2025
  • Other issues that arise are that the pelvic floor also weakens with age.
    — Taylor Lane, Flow Space, 10 Sep. 2025
  • The storm is quickly losing steam as wind shear and dry air weaken its structure.
    — Arizona Republic, AZCentral.com, 10 Oct. 2025
  • Anything that weakens fibers can worsen pilling.
    — Brandee Gruener, Southern Living, 9 Feb. 2026
  • But many of them suggested that growth would weaken as higher rates take hold.
    — Paul Wiseman, ajc, 17 Aug. 2022

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'weaken.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Last Updated: