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BNC: 54 COCA: 57

when
1 when /ˈwɛn/ adverb
1 when
/ˈwɛn/
adverb
Learner's definition of WHEN
1 
: at what time什么时候
2 
a  : at, in, or during which在那时；在…期间
b  : at or during which time在…时候；就在那个时候
3 
informal : at a former and usually less successful time昔日，从前（通常指未发迹时）
2 when /ˈwɛn/ conjunction
2 when
/ˈwɛn/
conjunction
Learner's definition of WHEN
1 
a  : at or during the time that当…时
b  : just after the time that在…之后（就）；一…就…
c  : at any or every time that每当…时
2 
a  — used to say what happens, is true, or can be done in a particular situation要是；如果
b  — used to ask why or how something is done in the situation that exists既然
3 
: in spite of the fact that : although尽管
4 
: the time or occasion at or in which是…的时刻
3 when /ˈwɛn/ pronoun
3 when
/ˈwɛn/
pronoun
Learner's definition of WHEN
: what or which time那时；什么时候

since when?

— see 1since
BNC: 54 COCA: 57

when

1 of 4

adverb

ˈ(h)wen How to pronounce when (audio)
(h)wən
1
: at what time
when will you return
2
a
: at or during which time
b
: and then
3
: at a former and usually less prosperous time
brag fondly of having known him when Vance Packard

when

2 of 4

conjunction

ˈ(h)wen How to pronounce when (audio)
(h)wən
1
a
: at or during the time that : while
went fishing when he was a boy
b
: just at the moment that
stop writing when the bell rings
c
: at any or every time that
when he listens to music, he falls asleep
2
: in the event that : if
a contestant is disqualified when he disobeys the rules
3
a
: considering that
why use water at all when you can drown in it Stuart Chase
b
: in spite of the fact that : although
quit politics when I might have had a great career in it
4
: the time or occasion at or in which
tomorrow is when we must decide
humor is when you laugh Earl Rovit

when

3 of 4

pronoun

ˈ(h)wen How to pronounce when (audio)
: what or which time
life-long homes for those … who have lived here since when Kim Waller

when

4 of 4

noun

ˈ(h)wen How to pronounce when (audio)
: the time in which something is done or comes about
troubled his head very little about the hows and whens of life Laurence Sterne

Synonyms

Conjunction

Example Sentences

Adverb When did the American Civil War begin? The detective asked me when I last saw her. When is the next performance? It was a time when people didn't have to lock their doors. the happy days when we were together We're still waiting for the test results, when we'll decide our next move. Conjunction When he finally showed up, he was drunk. When I was in school, we didn't have computers. You can go when the bell rings. Call me when you get home. Things were better when he got a job. When he watches television, he falls asleep. She quit politics when she might have had a great career in it. Pronoun He retired in 1998, since when he has been devoting his time to gardening. You need the report by when? See More
Recent Examples on the Web
Adverb
Demand for biodiesel got a boost in July, when a state law went into effect that required all home heating oil to be blended with biodiesel. Susan Dunne, Hartford Courant, 11 Sep. 2022 Still, Harsin and his staff must do better next week, when the competition levels up with Penn State coming to town. Tom Green | Tgreen@al.com, al, 11 Sep. 2022 Monday is the night when television asks viewers to tune in to the 2022 Emmy Awards on NBC, a celebration of TV at its finest. Julie Hinds, Detroit Free Press, 11 Sep. 2022 There were other signs of offensive life, like when ASU shifted to an empty set on the second play of the second half, created confusion in the Cowboys’ secondary, and completed a 73-yard pass to Giovanni Sanders. Kent Somers, The Arizona Republic, 11 Sep. 2022 Drake’s efforts to make contact with other worlds didn’t stop when Project Ozma ended. WIRED, 11 Sep. 2022 The restaurant workers' advocacy group evolved from a relief center for Windows on the World workers who lost their jobs when the twin towers fell. Karen Matthews, BostonGlobe.com, 11 Sep. 2022 Randy Johnson stayed outside the park lodge when the governor spoke to a crowd inside. Bruce Schreiner, ajc, 11 Sep. 2022 Retired General Ben Hodges told our David Martin that Ukraine's military could push Russia back to the borders that existed pre-February 24th, when the invasion happened, and that could happen before the end of the year. CBS News, 11 Sep. 2022
Noun
Ordinarily, sussing out the who-knows-what-and-when of damaging revelations is a Beltway parlor game. Alex Shephard, The New Republic, 26 Apr. 2022 Bumblefest and normalcy are not words that often appear in the same sentence, but the Sept. 17 return of Steve Rullman’s modern-rock hootenanny in downtown West Palm Beach now feels like a comforting symbol of back-when. Ben Crandell, sun-sentinel.com, 6 Aug. 2021 Frankly, the question was never an if, but a when and a how. Nicholas Quah, Vulture, 30 Mar. 2021 How about a streaming product versus a must-see-when-and-where-cable-event? Ars Staff, Ars Technica, 26 Dec. 2020 Williams, in short, paired all her how-to with a when-to wherewithal sometimes absent in her first two seasons. Mike Anthony, courant.com, 20 Dec. 2020 Dan Marino lost his first game as a rookie starter way-back-when to Buffalo in overtime 38-35. Dave Hyde, sun-sentinel.com, 22 Oct. 2020 These squishable-when-they're-not-spitting camelids hold antibodies that could hold the key to treating COVID-19, scientists suggested in a study published Tuesday in the journal Cell. TheWeek, 6 May 2020 Saturday’s 38-31 win at Nebraska put to bed a lot of since-whens and last-times in Bloomington. Zach Osterman, Indianapolis Star, 28 Oct. 2019 See More

Word History

Etymology

Adverb

Middle English, from Old English hwanne, hwenne; akin to Old High German hwanne when, Old English hwā who — more at who

Conjunction

Middle English, from Old English hwanne, hwenne, from hwanne, hwenne, adverb

First Known Use

Adverb

before the 12th century, in the meaning defined at sense 1

Conjunction

before the 12th century, in the meaning defined at sense 1a

Pronoun

14th century, in the meaning defined above

Noun

1616, in the meaning defined above

Time Traveler
The first known use of when was before the 12th century

Phrases Containing when

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BNC: 54 COCA: 57

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