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.
In addition to the cut-through traffic prohibitions for trucks on residential streets, city staff will work with the City Council on ordinance revisions to strengthen penalties on truck operators and owners who do not comply with signs and restrictions. Keith Matheny, Freep.com, 3 Oct. 2025 Taking magnesium at the same time as some other medications (such as antibiotics or bone-strengthening medications called bisphosphonates) can interfere with their absorption. Julie Scott, Verywell Health, 2 Oct. 2025 Hollub said the deal helps Oxy focus on its core oil and gas business, especially in the booming Permian, while strengthening its financial position through debt reduction. Jordan Blum, Fortune, 2 Oct. 2025 New Zealand banned military-style semiautomatic weapons and assault rifles months after the attack – the deadliest shooting ever in the country – and strengthened its counterterrorism laws. Karissa Waddick, USA Today, 2 Oct. 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 6 Oct. 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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