Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “strengthen”

strengthen

verb [I/T]  /ˈstreŋk·θən, ˈstreŋ-/ us  

strengthen verb [I/T] (BECOME EFFECTIVE)

to become more effective, or to make something more effective: [T] Somehow his illness strengthened their marriage and brought them closer together. [T] Parents can strengthen ties with their children.

strengthen verb [I/T] (BECOME POWERFUL)

to become more powerful or more difficult to break, or to make something stronger: [T] If something isn’t done to strengthen the railroad bridge, it may collapse. [I] The tone of her voice strengthened suddenly. [T] Exercise will strengthen your legs.
(Definition of strengthen from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of strengthen?
Add Cambridge dictionaries to your browser to your website

Definitions of “strengthen” in other dictionaries

Word of the Day

improvisation

a performance that an actor, musician, etc. has not practised or planned

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More