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must

   Also found in: Medical, Acronyms, Idioms, Wikipedia 0.01 sec.
must 1  (mst)
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.

[Middle English moste, from Old English mste, past tense of mtan, to be allowed; see med- in Indo-European roots.]

must 2  (mst)
n.
The quality or condition of being stale or musty.

[Probably back-formation from musty.]

must 3  (mst)
n.
The unfermented or fermenting juice expressed from fruit, especially grapes.

[Middle English, from Old English, from Latin mustum, from neuter of mustus, new, fresh.]

must 4  (mst)
n.
Variant of musth.

must 1
Verb
1. used as an auxiliary to express or indicate the need or necessity to do something: I must go to the shops
2. used as an auxiliary to express or indicate obligation or requirement: you must not smoke in here
3. used as an auxiliary to express or indicate the probable correctness of a statement: he must be finished by now
4. used as an auxiliary to express or indicate inevitability: all good things must come to an end
5. used as an auxiliary to express or indicate determination: I must try and finish this
6. used as an auxiliary to express or indicate conviction or certainty on the part of the speaker: you must be kidding!
Noun
an essential or necessary thing: strong boots are a must for hill walking [Old English mōste, past tense of mōtan to be allowed or obliged]

must 2
Noun
the pressed juice of grapes or other fruit ready for fermentation [Latin mustum new wine]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.mustmust - a necessary or essential thing; "seat belts are an absolute must"
essential, necessary, requisite, necessity, requirement - anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained"
2.must - grape juice before or during fermentation
grape juice - the juice of grapes
3.mustmust - the quality of smelling or tasting old or stale or mouldy
staleness - having lost purity and freshness as a consequence of aging
Adj.1.must - highly recommended; "a book that is must reading"
essential - basic and fundamental; "the essential feature"

must 1
must 2
noun mould, rot, decay, mildew, mustiness, fustiness, fetor, mouldiness
Translations
Spanish must [mʌst] aux vb (obligation): I must do it → debo hacerlo, tengo que hacerlo;
(probability): he must be there by now → ya debe (de) estar allí
n it's a must → es imprescindible

French must [mʌst] aux vb (obligation);
I must do it → je dois le faire, il faut que je le fasse;
(probability);
he must be there by now → il doit y être maintenant, il y est probablement maintenant;
(suggestion, invitation);
you must come and see me → il faut que vous veniez me voir nnécessité f, impératif m;
it's a must → c'est indispensable;
I must have made a mistake → j'ai dû me tromper

German must [mʌst] aux vbmüssen;
(in negative) → dürfen
nMuss nt;
I must do it → ich muss es tun;
you must not do that → das darfst du nicht tun;
he must be there by now → jetzt müsste er schon dort sein;
you must come and see me soon → Sie müssen mich bald besuchen;
why must he behave so badly? → warum muss er sich so schlecht benehmen?;
I must have made a mistake → ich muss mich geirrt haben;
the film is a must → den Film muss man unbedingt gesehen haben

Italian must [mʌst] aux vb (obligation): I must do it → devo farlo;
(probability): he must be there by now → dovrebbe essere arrivato ormai;
I must have made a mistake → devo essermi sbagliato n this programme/trip is a must → è un programma/viaggio da non perdersi

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