The meaning of LESSEN is to shrink in size, number, or degree : decrease. How to use lessen in a sentence. Synonym Discussion of Lessen.

LESSEN definition: 1. If something lessens or is lessened, it becomes less strong: 2. If something lessens or is…. Learn more.

LESSEN definition: to become less. See examples of lessen used in a sentence.

Definition of lessen verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Nov 20, 2025 · lessen (third-person singular simple present lessens, present participle lessening, simple past and past participle lessened) (transitive) To make less; to diminish; to reduce. quotations

To lessen is to make smaller, to reduce, or to weaken. A high school football coach might try to lessen head injuries by improving the quality of the team's helmets.

If something lessens or you lessen it, it becomes smaller in size, amount, degree, or importance. As time went on, her anxiety lessened. [VERB] Make sure that your immunisations are up to date to lessen …