1. To slow down; diminish: didn't let up in their efforts. 2. To become less severe or intense: The rain let up. Look up let in Wiktionary, the free dictionary. Contact LET Privacy Policy Terms And Conditions Competition T&C’s Careers Ladies European Golf Venture Limited, a private limited company registered in England Registration number: 12352756 – VAT registration GB 340 4610 40 Registered Office: Buckinghamshire Golf Club, Denham Court Dr. Buckinghamshire, United Kingdom UB9 5PG Powering Websites, If you let a person or an animal into, out of, or through a place, you allow them to enter, leave, or go through it, for example, by opening a door or making room for them. For example, the sentence “ Let me go to the store.” could either be a second-person imperative of “let” (addressing someone who might prevent the speaker from going to the store) or a first-person singular imperative of “go” (not implying any such preventer). To let is to allow or permit. If you don't prevent your little brother from jumping off the roof into a pile of leaves, you let him do it. Let us is used in all varieties of speech and writing to introduce a suggestion or a request: Let us consider all the facts before deciding. The contracted form let's occurs mostly in informal speech and writing: Let's go. Definition of let verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. hire, let, lease, rent, charter mean to engage or grant for use at a price. hire and let, strictly speaking, are complementary terms, hire implying the act of engaging or taking for use and let the granting of use. Let us is the first person plural imperative, which we only use in very formal situations. Let’s is the short form, which we often use to make suggestions which include ourselves: ….