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

transitive verb

: to make stronger

intransitive verb

: to become stronger
ˈstreŋ(k)th-nər How to pronounce strengthen (audio)

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 Borrell said the existing EU sanctions regime would be strengthened and expanded to punish Tehran and help prevent future attacks on Israel. Nicole Winfield, Quartz, 18 Apr. 2024 The legislation also seeks to strengthen U.S. supply chains and national security. Brian T. Allen, National Review, 18 Apr. 2024 Additionally, access to primary care should be strengthen and there should be an investment in social services for underserved communities. Emma Hall, Sacramento Bee, 18 Apr. 2024 The Federal Highway Administration funding is part of a $58.9 million allocation in grants supporting six projects in California designed to strengthen roads against the worsening effects of climate change. Adrian Rodriguez, The Mercury News, 17 Apr. 2024 First, Japan will need to strengthen its alliance with the United States and other major allies. Tomohiko Taniguchi, Foreign Affairs, 16 Apr. 2024 The initiative is funded by the CHIPS Act, which a bipartisan group of lawmakers passed in 2022 to strengthen the domestic supply of semiconductors, the vital components that power everything from phones and computers to cars and weapons systems. Don Clark, New York Times, 15 Apr. 2024 Tips for Training Fast-Twitch Muscle Fibers Giordano and Dr. Sternlicht recommended sprinting and powerlifting, or resistance training with max repetition and weight, to strengthen and build fast-twitch muscle fibers. Tiffany Ayuda, Health, 13 Apr. 2024 Winds will strengthen again Saturday with gusts up to 30 mph, the weather service says. Taylor Ward, CNN, 6 Apr. 2024

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

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

Dictionary Entries Near strengthen

Cite this Entry

“Strengthen.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Kids Definition


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

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