Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “let someone down”

let someone down

Phrasal Verb with let   /let/ verb (present participle letting, past tense and past participle let)
to not do something that you promised to do: I promised Sophie I would meet her and I can’t let her down.
(Definition of let someone down from the Webster's Essential Mini Dictionary © Cambridge University Press)

Translations of “let someone down”

Word of the Day

warm-up

something that you do to prepare yourself for an activity, especially gentle exercises before a physical activity

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More