contraction of when is: When's the show over? contraction of when does: When's the next train leave? contraction of when has: When's he ever been an authority? when [hwen, wen; hw unstressed uh n, w uh n] adverb at what time or period? how long ago? how soon?: When are they to arrive? When did the Roman Empire exist? under what circumstances? upon what occasion?: When is a letter of condolence in order? When did you ever see such a crowd? conjunction at what time: to know when to be silent. at the time or in the event that: when we were young; when the noise stops. at any time; whenever: He is impatient when he is kept waiting. upon or after which; and then: We had just fallen asleep when the bell rang. while on the contrary; considering that; whereas: Why are you here when you should be in school? pronoun what time: Till when is the store open? which time: They left on Monday, since when we have heard nothing. noun the time of anything: the when and the where of an act. Origin of when before 1000; Middle English when(ne
Old English hwenne;
if, when (compare
when, how); akin to
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for when's adverb at what time? over what period? when is he due? ( used in indirect questions) ask him when he's due say when to state when an action is to be stopped or begun, as when someone is pouring a drink (subordinating) at a time at which; at the time at which; just as; after I found it easily when I started to look seriously although he drives when he might walk considering the fact that how did you pass the exam when you'd not worked for it? at which (time); over which (period) an age when men were men noun (usually plural) a question as to the time of some occurrence Word Origin for when
hwanne, hwænne; related to Old High German hwanne, hwenne, Latin cum usage When should not be used loosely as a substitute for in which after a noun which does not refer to a period of time: paralysis is a condition in which (not when) parts of the body cannot be moved
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for when's adv.
hwænne, hwenne, hwonne, from Germanic pronomial stem *khwa- (cf. Old Saxon hwan, Old Frisian hwenne, Middle Dutch wan, Old High German hwanne, German wann "when"), from PIE interrogative base *qwo- (see who).
Online Etymology Dictionary, © 2010 Douglas Harper
Idioms and Phrases with when's
In addition to the idioms beginning with
when 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 when the going gets tough, the tough get going when the shit hits the fan
cross a bridge when one comes to it push comes to shove, when
The American Heritage® Idioms Dictionary
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