The meaning of STRENGTHEN is to make stronger. How to use strengthen in a sentence.

STRENGTHEN definition: 1. to make something stronger or more effective, or to become stronger or more effective: 2. to…. Learn more.

Define strengthen. strengthen synonyms, strengthen pronunciation, strengthen translation, English dictionary definition of strengthen. v. strength·ened , strength·en·ing , strength·ens v. …

Definition of strengthen verb from the Oxford Advanced Learner's Dictionary. [intransitive, transitive] to become more powerful or effective; to make somebody/something more powerful …

Strengthen definition: to make stronger; give strength to.. See examples of STRENGTHEN used in a sentence.

Find 927 different ways to say STRENGTHEN, along with antonyms, related words, and example sentences at Thesaurus.com.

strength•en /ˈstrɛŋkθən, ˈstrɛn-/ v. to (cause to) grow stronger; give strength (to): [no object] The hurricane strengthened overnight. [~ + object] We'll have to strengthen our defenses.

Sep 9, 2025 · strengthen (third-person singular simple present strengthens, present participle strengthening, simple past and past participle strengthened) (transitive) To make strong or …

If something strengthens an object or structure, it makes it able to be treated roughly or able to support heavy weights, without being damaged or destroyed. The builders will have to …

You can strengthen your muscles by working out, or strengthen your brain by learning new words. Anytime you strengthen something, you're making it more resistant, vigorous, or tough.