strengthen

[change] Verb

Plain form
strengthen

Third-person singular
strengthens

Past tense
strengthened

Past participle
strengthened

Present participle
strengthening

(transitive) If something is strengthened, then it is made stronger; strength is added to it.

They are keen to strengthen ties with the UN.
(transitive) If someone strengthens a person, he or she animates or gives moral strength to encourage the person.
(intransitive) If something strengthens, it grows strong or stronger.

This section needs someone to add example sentences to it.