Must meaning

mŭst
Used to express a command or admonition.

You must not go there alone. You simply must be careful.

verb
9
6
To be determined to; have as a fixed resolve.

If you must leave, do it quietly.

verb
5
4
The unfermented or fermenting juice expressed from fruit, especially grapes.
noun
4
2
To be compelled, as by a physical necessity or requirement.

Plants must have oxygen in order to live.

verb
4
4
To be obliged or required by morality, law, or custom.

Citizens must register in order to vote.

verb
3
5
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(modal auxiliary, defective) To do as a requirement; indicates that the sentence subject is required as an imperative or directive to execute the sentence predicate, with failure to do so resulting in a negative consequence.

You must arrive in class on time. "” the requirement is an imperative.

This door handle must be rotated fully. "” the requirement is a directive.

The children must be asleep by now.

verb
2
2
To be required or obliged to go.
verb
1
0
Something that is absolutely required or indispensable.

Promptness on the job is a must. Comfortable boots are a must when going on a hike.

noun
1
0
The quality or condition of being stale or musty.
noun
1
0
Musk.
noun
1
0
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Used to express compulsion, obligation, requirement, or necessity.

I know I must pay her; I knew I must pay her.

verb
1
0
Used to express probability.

Then you must be my cousin; I thought he must be my cousin.

verb
1
0
Used to express certainty or inevitability.

All men must die; they knew they must die.

verb
1
0
Used elliptically in the same functions as must.

Shoot if you must.

verb
1
0
Something that must be done, had, read, seen, etc.

This book is a must.

noun
1
0
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That must be done, etc.; necessary; essential.

A book that is must reading.

adjective
1
0
A state of frenzy in animals, esp. in the male elephant, usually associated with sexual heat.
noun
1
0
The juice pressed from grapes or other fruit before it has fermented; new wine.
noun
1
0
A musty quality or state; mustiness.
noun
1
0
The quality or condition of being stale or musty.
noun
1
0
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(modal auxiliary, defective) To do with certainty; indicates that the speaker is certain that the subject will have executed the predicate.

If it has rained all day, it must be very wet outside.

You picked one of two, and it wasn't the first: it must have been the second.

Arise, and go into the city, and it shall be told thee what thou must do. (Bible, Acts 9:6)

verb
1
0
Something that is mandatory or required.

If you'll be out all day, a map is a must.

noun
1
0
The property of being stale or musty.
noun
1
0
Something that exhibits the property of being stale or musty.
noun
1
0
Fruit juice that will ferment or has fermented, usually grapes.
noun
1
0
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To make musty.
verb
1
0
(intransitive) To become musty.
verb
1
0
A time during which male elephants exhibit increased levels of sexual activity and aggressiveness (also musth)
noun
1
0
The definition of a must is something that has to be done.

An example of a must is seeing a movie that has won a Best Picture Academy Award.

noun
0
1
Must is used to express a requirement or a necessity.

An example of must is a student having to get all necessary credits to graduate.

verb
0
1
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In must.
adjective
0
1

Origin of must

  • Middle English moste from Old English mōste past tense of mōtan to be allowed med- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Middle English from Old English from Latin mustum from neuter of mustus new, fresh

    From American Heritage Dictionary of the English Language, 5th Edition

  • Scottish from Old French variant of musc musk

    From American Heritage Dictionary of the English Language, 5th Edition

  • Probably back-formation from musty

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English moste (“must", literally “had to"), from Old English mōste (“had to"), 1st & 3rd person singular past tense of mōtan (“to be allowed, be able to, have the opportunity to, be compelled to, must, may"). Cognate with Dutch moest (“had to"), German musste (“had to"), Swedish mÃ¥ste (“must, have to, be obliged to"). More at mote.

    From Wiktionary

  • Persian مست (mast, “drunk, inebriated"), from Middle Persian 𐭬𐭮𐭲 (mast).

    From Wiktionary

  • Old French must, most, from Latin mustum

    From Wiktionary