Definition of Must in English :

Define Must in English

Must meaning in English

Meaning of Must in English

Pronunciation of Must in English

Must pronunciation in English

Pronounce Must in English

Must

see synonyms of must

Noun

1. must

a necessary or essential thing

Example Sentences:
'seat belts are an absolute must'

2. must

grape juice before or during fermentation

3. moldiness, must, mustiness

the quality of smelling or tasting old or stale or mouldy

Adjective

4. must

highly recommended

Example Sentences:
'a book that is must reading'

WordNet Lexical Database for English. Princeton University. 2010.


Must

see synonyms of must
verb (takes an infinitive without to or an implied infinitive)
1. 
used as an auxiliary to express obligation or compulsion: you must pay your dues. In this sense, must does not form a negative. If used with a negative infinitive it indicates obligatory prohibition
2. 
used as an auxiliary to indicate necessity
I must go to the bank tomorrow
3. 
used as an auxiliary to indicate the probable correctness of a statement
he must be there by now
4. 
used as an auxiliary to indicate inevitability
all good things must come to an end
5. (used as an auxiliary to express resolution)
a. 
on the part of the speaker when used with I or we
I must finish this
b. 
on the part of another or others as imputed to them by the speaker, when used with you, he, she, they, etc
let him get drunk if he must
6. (used emphatically)
used as an auxiliary to express conviction or certainty on the part of the speaker
he must have reached the town by now, surely
you must be joking
7. (foll by away)
used with an implied verb of motion to express compelling haste
I must away
noun
8. 
an essential or necessary thing
strong shoes are a must for hill walking
noun
mustiness or mould
noun
the newly pressed juice of grapes or other fruit ready for fermentation
noun
a variant spelling of musth

Collins English Dictionary. Copyright © HarperCollins Publishers


Must

see synonyms of must
auxiliary verbWord forms: must
1. 
used to express compulsion, obligation, requirement, or necessity
I know I must pay her; I knew I must pay her
2. 
used to express probability
then you must be my cousin; I thought he must be my cousin
3. 
used to express certainty or inevitability
all men must die; they knew they must die
verb intransitive
4. 
used elliptically in the same functions as must1 auxiliary verb.
shoot if you must
noun Informal
5. 
something that must be done, had, read, seen, etc.
this book is a must
adjective Informal
6. 
that must be done, etc.; necessary; essential
must reading
noun
1. 
a state of frenzy in animals, esp. in the male elephant, usually associated with sexual heat
adjective
2. 
in must
noun
the juice pressed from grapes or other fruit before it has fermented; new wine
noun
a musty quality or state; mustiness

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


Must

see synonyms of must
v.
v.aux.
1. To be obliged or required by morality, law, or custom: Citizens must register in order to vote.
2. To be compelled, as by a physical necessity or requirement: Plants must have oxygen in order to live.
3. Used to express a command or admonition: You must not go there alone. You simply must be careful.
4. To be determined to; have as a fixed resolve: If you must leave, do it quietly.
5.
a. Used to indicate inevitability or certainty: We all must die.
b. Used to indicate logical probability or presumptive certainty: If the lights were on, they must have been at home.
v.intr.
Archaic
To be required or obliged to go: "I must from hence" (Shakespeare).
n.
Something that is absolutely required or indispensable: Promptness on the job is a must. Comfortable boots are a must when going on a hike.
n.
The quality or condition of being stale or musty.
n.
The unfermented or fermenting juice expressed from fruit, especially grapes.
n.
Variant of musth.
n.
Musk.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.