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

Definition of strengthen

transitive verb

: to make stronger

intransitive verb

: to become stronger

Keep scrolling for more

Other Words from strengthen

strengthener \ ˈstreŋ(k)th-​nər How to pronounce strengthen (audio) , ˈstren(t)th-​ ; ˈstreŋ(k)-​thə-​ , ˈstren(t)-​ \ noun

Synonyms & Antonyms for strengthen



Visit the Thesaurus for More 

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.
See More
Recent Examples on the Web The best way to treat it is temporarily wearing an eye patch over the strong eye to help strengthen the weak eye. Alaa Elassar, CNN, 17 July 2021 Olay has created the Regenerist Collagen Peptide 24 moisturizer to help strengthen and plump the skin. Emerald Elitou, Essence, 9 July 2021 The Patriots this offseason added free agents Nelson Agholor and Kendrick Bourne to help strengthen their wide receiver unit. Mike Jones, USA TODAY, 8 July 2021 The Knight Foundation’s $5 million investment in the university includes $500,000 for the Knight Chair to help strengthen journalism teaching across HBCUs. Allie Yang, ABC News, 8 July 2021 Once the initial pain has subsided, physical therapy may be useful to regain movement in the affected area and help strengthen your back muscles to prevent further injuries. Sarah Jacob, SELF, 1 July 2021 Their goals are to help strengthen the educational health, cultural, civic, political and economic power of the LGBTQ+ Latinx communities. Diane López Olea, San Diego Union-Tribune, 30 June 2021 Establishing a CryptoCoE can help strengthen your crypto strategy and safeguard your business. Anudeep Parhar, Forbes, 17 June 2021 Neiman Marcus said that the acquisition is part of a three-year plan to invest more than $500 million to help strengthen its digital business, which also includes shifting its warehouse operations from Irving to Dallas’ Pinnacle Park. Maria Halkias, Dallas News, 15 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'strengthen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of strengthen

15th century, in the meaning defined at transitive sense

Keep scrolling for more

Buying Guide

Our team at The Usage has selected the best dumbbells of 2021.

Learn More About strengthen

Time Traveler for strengthen

Time Traveler

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

See more words from the same century

Dictionary Entries Near strengthen

strength deck


strengthening card

See More Nearby Entries 

Statistics for strengthen

Last Updated

25 Jul 2021

Cite this Entry

“Strengthen.” Dictionary, Merriam-Webster, Accessed 1 Aug. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for strengthen



English Language Learners Definition of strengthen

: to make (someone or something) stronger, more forceful, more effective, etc.
: to become stronger, more forceful, more effective, etc.
of money : to increase in value when compared to money from other countries


strength·​en | \ ˈstreŋ-thən How to pronounce strengthen (audio) \
strengthened; strengthening

Kids Definition of strengthen

: to make, grow, or become stronger or more powerful Exercises will strengthen your muscles.

More from Merriam-Webster on strengthen

Nglish: Translation of strengthen for Spanish Speakers

Britannica English: Translation of strengthen for Arabic Speakers


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!