- weak·en·er, noun
- re·weak·en, verb
- un·weak·ened, adjective
- un·weak·en·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use weaken in a sentence
Earth’s magnetic field protects the planet from cosmic and solar radiation, but that field can weaken during pole reversals.50 years ago, scientists named Earth’s magnetic field as a suspect in extinctions | Jonathan Lambert | November 19, 2020 | Science News
Researchers believe that catching one of the viruses could weaken your immune system and make you more susceptible to the other.
The total damage done depends in part on how quickly it weakens.Hurricanes might not be losing steam as fast as they used to | Scott K. Johnson | November 11, 2020 | Ars Technica
Without adequate water, healthy bats begin to weaken, making them more susceptible to diseases that are already devastating populations around the world.These Photos Remind Us Why Conservation Matters - Issue 92: Frontiers | Kevin Berger | November 11, 2020 | Nautilus
The harsh chemo treatment had weakened his immune system, making him susceptible to infection.Husband’s tragic death leaves D.C. man to raise 4 young children alone | Lou Chibbaro Jr. | November 11, 2020 | Washington Blade
That tends to encourage large and small holders alike to consider turning their weakened rubles into other currencies.
But with the crisis, the education systems have just been further weakened.
The current FDA-approved measles vaccine consists of live but weakened measles virus that is injected into the arm.Powdered Measles Vaccine Could Be Huge for Developing World | Kent Sepkowitz | December 2, 2014 | THE DAILY BEAST
She too spends the days at home alone, weakened by the medication she takes.
When an AIDS-related illness weakened a friend, she committed herself to being with him when he died.
The feeling is hopeful if only we had more men and especially drafts to fill up our weakened battalions.Gallipoli Diary, Volume I | Ian Hamilton
The earth mourned, and faded away, and is weakened: the world faded away, the height of the people of the earth is weakened.The Bible, Douay-Rheims Version | Various
The driving power that forced an older self upon her had weakened before the steadfast love he bore her.The Wave | Algernon Blackwood
But the system was unsatisfactory, led to jealousies, weakened discipline, and was not conducive to efficient working.Fifty Years of Railway Life in England, Scotland and Ireland | Joseph Tatlow
Congress met, and during the debate on the momentous question—peace or war—the hitherto compact group of intransigents weakened.The Philippine Islands | John Foreman
British Dictionary definitions for weaken
to become or cause to become weak or weaker
- weakener, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012