
[Middle English, from Old English hwenne.]
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).
Idioms beginning with when:
when the going gets tough, the tough get going
when the shit hits the fan
when all's said and done
when in Rome do as the Romans do
when it comes to
when least expected
when one's back is turned
when one's ship comes in
when pigs fly
when the cat's away, the mice will play
when the chips are down
when the dust has settled
See also cross a bridge when one comes to it; push comes to shove, when.
We will eat when dad arrives.
LearnThatWord.com is a free vocabulary and spelling program where you only pay for results!

Dansk (Danish)
adv. - hvornår, når
conj. - da, når, skønt, hvor
pron. - da
n. - tid (og sted)
Nederlands (Dutch)
wanneer, als, toen, terwijl
Français (French)
adv. - quand (est-ce que), quand, lorsque, au moment où, à l'époque où, depuis (lors), d'ici là, chaque fois, dans la mesure du
conj. - quand, lorsque, alors que, dès que, quand tout d'un coup, une fois que
pron. - quand, où
n. - le moment où
Deutsch (German)
conj. - wann, als, wo, wenn
adv. - wann, als, wo
pron. - wann
n. - Wann
Ελληνική (Greek)
conj. - όταν, τη στιγμή που, αφού, δεδομένου ότι, οπότε, οπόταν
adv. - πότε;, όταν, τη στιγμή που
pron. - πότε;
n. - χρόνος, χρονική στιγμή
Português (Portuguese)
conj. - quando
adv. - quando
pron. - quando (interrog.)
n. - quando (m)
Русский (Russian)
когда, время, дата
Español (Spanish)
adv. - cuándo
conj. - cuando
pron. - cuándo
n. - tiempo, fecha, ocasión de
Svenska (Swedish)
conj. - när, då
adv. - när, då
pron. - när, då
n. - (when and where)tid o plats
中文(简体)(Chinese (Simplified))
何时, 什么时候, 就在那个时候, 在...的时候, 什么时侯, 那时, 时间
中文(繁體)(Chinese (Traditional))
adv. - 何時, 什麼時候
conj. - 就在那個時候, 在...的時候
pron. - 什麼時侯, 那時
n. - 時間
한국어 (Korean)
adv. - 언제, 어느 정도에서
conj. - ~할 때에, ~할 때는 언제나, ~한 뒤 곧
pron. - 언제
n. - (문제의) 때, 시기
日本語 (Japanese)
n. - 時, 場合
adv. - いつ, …する, …するとき, …するとそのとき
conj. - …するときに, するときはいつでも, …ならば, …であるのに
idioms:
العربيه (Arabic)
(حرف عطف) متى (ظرف) متى (ضمير) وإذ ذاك, ومن ثم, مع أن, غرم أن (الاسم) زمان
עברית (Hebrew)
adv. - מתי?, באיזו הזדמנות?, מתי זה קרה/יקרה?, כאשר, כש-, (זמן) שבו
conj. - בשעה ש-, למרות ש-, כאשר, לאחר, ואז, בדיוק אז
pron. - מתי?
n. - הזמן, המקום, התאריך
If you are unable to view some languages clearly, click here.