when

adverb, conjunction

/wen/

Definition

A1 at what time; at the time at which: "I did tell you about it." "When? I don't remember." When are you going? When's the baby due? We'll go when you're ready. Tell me when to start. Ask him when he's next coming home. When do you expect to have the project completed (by)? She was only 20 when she had her first baby. He was quite shocked when I told him. I hate it when there's no one in the office. I went there when I was a child. I was just getting into the bath when the phone rang.Question words and expressions

(Definition of when adverbconjunction from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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