when

adverb
UK: /wen/
US: /wen/

  1. At what time; during or after the time that.

    1. I will call you when I arrive at home tonight [ ] [ ]
    2. Let me know when you are ready to start the project, please [ ] [ ]

  2. Used to introduce a clause that refers to a time or occasion.

    1. She was sad when she heard the news this morning [ ] [ ]
    2. I always feel happy when I am spending time with my family [ ] [ ]

  3. Considering that; since.

    1. Why buy new shoes when you have so many pairs already? [ ] [ ]
    2. How can I concentrate on my work when you are making so much noise? [ ] [ ]

Synonyms

as during while whilst
when interjection

  1. What time?

    1. When is the movie starting tonight? [ ] [ ]
    2. I do not know when they are planning to arrive for dinner. [ ] [ ]
when noun

  1. A time or occasion.

    1. I will never forget that when. [ ] [ ]
    2. Since when did you become an expert on the topic we discussed? [ ] [ ]
when conjunction

  1. Used to connect two parts of a sentence, where one event happens during the time of the other.

    1. Call me when you get there soon [ ] [ ]
    2. We decided to go home when it started to rain heavily [ ] [ ]

Frequently Asked Questions

The word "when" in English means: At what time; during or after the time that., Used to introduce a clause that refers to a time or occasion., Considering that; since..

The phonetic transcription of "when" is /wen/ in British English and /wen/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "when": as, during, while, whilst.

Example usage of "when": "I will call you when I arrive at home tonight". More examples on the page.