1 (used in questions) at what time; on what occasion:
When did you last see him? * When can I see you? * When (= in what circumstances) would such a solution be possible?
2 used after an expression of time to mean 'at which' or 'on which':
Sunday is the only day when I can relax. * There are times when I wonder why I do this job.
3 at which time; on which occasion:
The last time I went to Scotland was in May, when the weather was beautiful.
pronoun what/which time:
Until when can you stay? * 'I've got a new job.' 'Since when?'
conjunction
1 at or during the time that:
I loved history when I was at school.
2 after:
Call me when you've finished.
3 at any time that; whenever:
Can you spare five minutes when it's convenient?
4 just after which:
He had just drifted off to sleep when the phone rang.
5 considering that:
How can they expect to learn anything when they never listen?
6 although:
She claimed to be 18, when I know she's only 16.
IDIOMS see ASconj.
Rate this entry
About this entry
This is a English–English dictionary entry.
Sourced from Main Dictionary in Lughet's collection.
This word also appears under other sources in Lughet's collection — see the list below.
This entry for when is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is when a noun, verb, or something else?
In this entry, when is tagged as adverb.
Does when appear elsewhere on Lughet?
Yes — when appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.