Did you know?

Click any word in a definition or example to find the entry for that word

let in

 - definition

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

phrasal verb [transitive]
Word Forms
present tense
I/you/we/theylet in
he/she/itlets in
present participleletting in
past tenselet in
past participlelet in
  1. 1
    let someone in to allow someone to enter a house, room etc

    Don't let anybody in – I'll be back in 15 minutes.

  2. 3
    let yourself in for something informal to put yourself in a difficult situation

    She didn't know what she was letting herself in for when she married John.

See also main entry: let

Open Dictionary

selfie stick

an expandable stick which you attach to a mobile phone or camera to help you take a selfie …

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog