mustn't
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
must·n't
(mŭs′ənt) Contraction of must not.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
mustn't
(ˈmʌsənt)contraction of
must not
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
must•n't
(ˈmʌs ənt) contraction of must not.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Translations
must
(mast) – negative short form ˈmustn't (-snt) – verb1. used with another verb to express need. We must go to the shops to get milk.
2. used, usually with another verb, to suggest a probability. They must be finding it very difficult to live in such a small house.
3. used, usually with another verb, to express duty, an order, rule etc. You must come home before midnight; All competitors must be under 15 years of age.
noun something necessary, essential, or not to be missed. This new tent is a must for the serious camper.
must have used to state a probability about something in the past. She must have been very young when she got married.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.