How to Use harden in a Sentence

harden

verb

• The presence of certain substances in the blood can cause the arteries to harden.
• These additives are designed to harden the steel.
• He had been hardened by his years of military service.
• The news has hardened opposition to the government.
• Again, your goal is not to harden your son to the meanness of the world.
  — Meghan Leahy, Washington Post, 21 Dec. 2022
• The same team and the same coach, but hardened by having to walk through the rain.
  — Sebastian Stafford-Bloor, New York Times, 22 May 2025
• If the wax is still soft, freeze the item to harden the wax, and then scrape off the excess wax.
  — Carolyn Forte, Good Housekeeping, 24 Dec. 2018
• The churned ice cream needs to harden in the freezer for at least 6 hours.
  — Ann Maloney, Washington Post, 24 June 2022
• Once shaped, the warriors were fired in a kiln to harden them.
  — Nathaniel Scharping, Discover Magazine, 18 Nov. 2020
• When your bread is about to go stale, stick it in the freezer to harden.
  — People Staff, Peoplemag, 24 Oct. 2022
• Only from the sixth plague on does the Torah state that God hardened Pharaoh’s heart.
  — Rabbi Avi Weiss, Sun Sentinel, 8 Jan. 2024
• Skin on the palms of the hands and soles of the feet may thicken or harden later in life.
  — Megan Woodward, baltimoresun.com/maryland/carroll, 26 Oct. 2020
• But then comes autumn to harden the grain, / to warn it to ripen ahead of the winter.
  — Katy Waldman, The New Yorker, 3 Aug. 2021
• Wax can harden the finish and lessen the look of scratches.
  — Washington Post, 21 Nov. 2020
• To harden them, the researchers used water to wash away the PEG.
  — Robert F. Service, Science | AAAS, 8 Apr. 2021
• Soft high notes waver; loud ones seem to harden in the air.
  — Zachary Woolfe, New York Times, 13 Apr. 2018
• If the mixture gets too thick and hardens, just remelt it.
  — Aliza Abarbanel, Bon Appetit, 5 June 2018
• Let the ice sit for at least 10 minutes to harden the sticker.
  — Ashlyn Needham, Southern Living, 7 May 2025
• Then the wings will fill with fluid and the bodies will harden.
  — Chris McKeown, The Enquirer, 6 Apr. 2021
• The snow will get soft and a bit slushy in the afternoon but harden up at night.
  — Washington Post, 12 Mar. 2021
• And once it’s shaped and hardened, the rest is just arithmetic and money.
  — John Kass, chicagotribune.com, 13 July 2018
• The rice will harden and take longer and longer to absorb water.
  — Jesse Sparks, Bon Appétit, 3 Sep. 2019
• My eyes were hardening around the edges, just like my heart.
  — Rachel Desantis, People.com, 12 Feb. 2025
• They’d be hardened to anything that life and work threw their way.
  — Jodie Cook, Forbes.com, 7 July 2025
• But the sound hardens and sharpens with rpm to a bright, full-throated wail.
  — Dan Neil, WSJ, 26 Apr. 2018
• Ice boxes are often still used to transport organs between hospitals, which can harden them.
  — Harriet Marsden, TheWeek, 27 Mar. 2026
• Saline rinses at the first sign of congestion can prevent mouth breathing from hardening into habit.
  — Allison Palmer, Charlotte Observer, 26 Mar. 2026
• Gulf’s stance hardens There have been strong signs that the Gulf’s collective patience has been wearing thin.
  — Holly Ellyatt,emma Graham, CNBC, 26 Mar. 2026
• And the Iranian position has now hardened.
  — Isaac Chotiner, New Yorker, 25 Mar. 2026
• Heat waves harden the ground and make flooding worse.
  — Mark Gongloff, Mercury News, 21 Mar. 2026