The meaning of STRENGTHEN is to make stronger, more forceful, more effective, etc.. How to use strengthen in a sentence.

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

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

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 or effective. Her …

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 strengthen the existing …

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.

Nov 24, 2025 · From rare Middle English strengthenen (14th c.), from earlier strengthen (12th c.), where -en is the infinitive ending. Probably the original form was reinterpreted as strength +‎ -en around the …

Factsheet What does the verb strengthen mean? There are 13 meanings listed in OED's entry for the verb strengthen. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

STRENGTHEN meaning: 1 : to make (someone or something) stronger, more forceful, more effective, etc.; 2 : to become stronger, more forceful, more effective, etc.

Definition of strengthen. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.