At the time that: in the spring, when the snow melts.
As soon as: I'll call you when I get there.
Whenever: When the wind blows, all the doors rattle.
During the time at which; while: when I was young, I was sick all the time.
Whereas; although: She stopped short when she ought to have continued.
Considering that; if: How can he get good grades when he won't study?
pron.
What or which time: Since when has this been going on?
n.
The time or date: Have they decided the where and when?
[Middle English, from Old English hwenne; see kwo- in Indo-European roots.]
Usage Note: In informal style when is often used after forms of be in definitions: A dilemma is when you don't know which way to turn. Although useful, this construction is widely regarded as incorrect or unsuitable for formal discourse. In formal style such definitions should be recast to eliminate is when, either by supplying generic term that may be modified by a restrictive adjective clause (A dilemma is a situation in which you don't know which way to turn) or by making the when-clause adverbial (You are in a dilemma when you don't know which way to turn).
O.E. hwænne, hwenne, hwonne, from Gmc. pronomial stem *khwa- (cf. O.S. hwan, O.Fris. hwenne, M.Du. wan, O.H.G. hwanne, Ger. wann "when"), from PIE interrogative base *qwo- (see who).
at what time(?) Example: When did you arrive?; When will you see her again?; I asked him when the incident had occurred; Tell me when to jump.
Arabic:
مَتى
Chinese (Simplified):
何时
Chinese (Traditional):
何時
Czech:
kdy
Danish:
hvornår
Dutch:
wanneer
Estonian:
millal
Finnish:
milloin
French:
quand
German:
wann
Greek:
πότε
Hungarian:
mikor?
Icelandic:
hvenær
Indonesian:
bilamana
Italian:
quando
Japanese:
いつ
Korean:
언제
Latvian:
kad
Lithuanian:
kada
Norwegian:
når
Polish:
kiedy
Portuguese (Brazil):
quando
Portuguese (Portugal):
quando
Romanian:
când
Russian:
когда
Slovak:
kedy
Slovenian:
kdaj
Spanish:
cuando
Swedish:
när
Turkish:
ne zaman
when1[wenwən, wen]conjunction
(at or during) the time at which Example: It happened when I was abroad; When you see her, give her this message; When I've finished, I'll telephone you.
Arabic:
عِندَما
Chinese (Simplified):
当…时
Chinese (Traditional):
當…時
Czech:
když, až
Danish:
da; når
Dutch:
toen, wanneer
Estonian:
kui
Finnish:
kun
French:
quand, lorsque
German:
als; wenn
Hungarian:
amikor
Icelandic:
þegar
Indonesian:
ketika
Italian:
quando
Japanese:
~する時
Korean:
…할 때에
Latvian:
(tad) kad
Lithuanian:
(tuo metu) kai
Norwegian:
da; når
Polish:
gdy, kiedy
Portuguese (Brazil):
quando
Portuguese (Portugal):
quando
Romanian:
când
Russian:
когда
Slovak:
keď
Slovenian:
ko
Spanish:
cuando
Swedish:
när
Turkish:
…-diğinde, …-ince
when2[wenwən, wen]conjunction
in spite of the fact that; considering that Example: Why do you walk when you have a car?
When\, adv. [OE. when, whan, whenne, whanne, AS. hw[ae]nne, hwanne, hwonne; akin to OS. hwan, OD. wan, OHG. wanne, G. wann when, wenn if, when, Goth. hwan when, and to E. who. ????. See Who.]1. At what time; -- used interrogatively. When shall these things be? --Matt. xxiv. 3. Note: See the Note under What, pron., 1. 2. At what time; at, during, or after the time that; at or just after, the moment that; -- used relatively. Kings may Take their advantage when and how they list. --Daniel. Book lore ne'er served, when trial came, Nor gifts, when faith was dead. --J. H. Newman. 3. While; whereas; although; -- used in the manner of a conjunction to introduce a dependent adverbial sentence or clause, having a causal, conditional, or adversative relation to the principal proposition; as, he chose to turn highwayman when he might have continued an honest man; he removed the tree when it was the best in the grounds. 4. Which time; then; -- used elliptically as a noun. I was adopted heir by his consent; Since when, his oath is broke. --Shak. Note: When was formerly used as an exclamation of surprise or impatience, like what! Come hither; mend my ruff: Here, when! thou art such a tedious lady! --J. Webster. When as, When that, at the time that; when. [Obs.] When as sacred light began to dawn. --Milton. When that mine eye is famished for a look. --Shak.