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Which of the following nouns has an irregular plural form?

Origin of when

before 1000; Middle English when(ne), Old English hwenne; cognate with German wann when, wenn if, when (compare Gothic hwan when, how); akin to who, what

WORDS THAT MAY BE CONFUSED WITH when

1. when , whence2. wen, when
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use when in a sentence

British Dictionary definitions for when

when
/ (wɛn) /

adverb
noun
(usually plural) a question as to the time of some occurrence

Word Origin for when

Old English hwanne, hwænne; related to Old High German hwanne, hwenne, Latin cum

usage for when

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with when

when

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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