strengthen

verb

strength·​en ˈstreŋ(k)-thən How to pronounce strengthen (audio)
ˈstren(t)-
strengthened; strengthening
ˈstreŋ(k)th-niŋ,
ˈstren(t)th-;
ˈstreŋ(k)-thə- How to pronounce strengthen (audio)
ˈstren(t)-

transitive verb

: to make stronger

intransitive verb

: to become stronger
strengthener
ˈstreŋ(k)th-nər
ˈstren(t)th-;
ˈstreŋ(k)-thə- How to pronounce strengthen (audio)
ˈstren(t)-
noun

Examples of strengthen in a Sentence

These exercises will strengthen your stomach muscles. He takes herbs to strengthen his immune system. The development of new electronic products has strengthened the company's position as the leader in digital technology. Holidays often serve to strengthen bonds between family members. Their financial situation strengthened her determination to find a new career. The team has been strengthened by the addition of several new players. The winds are expected to strengthen. The economy is slowly strengthening. The Canadian dollar is strengthening against the U.S. dollar. The trade restrictions will strengthen the pound.
Recent Examples on the Web
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.
According to the 2024 People’s Climate Vote, 80% of people globally want their countries to strengthen climate commitments, and over two-thirds support a fast transition from fossil fuels. Felicia Jackson, Forbes.com, 21 June 2025 At Go Behavioral, a team strengthened by BCBA, clinical psychologists, and RBT professionals helps children work on developing skills by breaking them down into small, manageable steps, which are then reinforced consistently. Malana Vantyler, USA Today, 21 June 2025 On the flip side, strengthening one part of your body can help bolster another, which is especially true for your back, Dr. Cheng says. Katie Camero, SELF, 20 June 2025 Meanwhile, crews continue to strengthen lines around the Rancho Fire in Shasta County, which ignited Thursday near Cottonwood. Daniel Hunt, Sacbee.com, 20 June 2025 See All Example Sentences for strengthen

Word History

First Known Use

15th century, in the meaning defined at transitive sense

Time Traveler
The first known use of strengthen was in the 15th century

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Cite this Entry

“Strengthen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/strengthen. Accessed 27 Jun. 2025.

Kids Definition

strengthen

verb
strength·​en ˈstreŋ(k)-thən How to pronounce strengthen (audio)
strengthened; strengthening ˈstreŋ(k)th-(ə-)niŋ How to pronounce strengthen (audio)
: to make or become stronger
strengthener noun

More from Merriam-Webster on strengthen

Last Updated: - Updated example sentences
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