English

Alternative forms

• mus'

Verb

must

1. (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.

   The children must be asleep by now.

2. (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

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

Quotations

• 1936, Alfred Edward Housman, More Poems, IX, lines 3-6

  Forth I wander, forth I must,

  And drink of life again.

  Forth I must by hedgerow bowers

  To look at the leaves uncurled

• 1937 J.R.R. Tolkien, The Hobbit

  We must away ere break of day

  To seek the pale enchanted gold.

• 1968 Fritz Leiber, Swords in the Mist

  Whereupon while one patched or napped, the other must stand guard against inquisitive two- and three-headed dragons and even an occasional monocephalic.

Usage notes

• (auxiliary, to do with certainty): Compare with weaker auxiliary verb should, indicating a strong probability of the predicate's execution.
• (auxiliary, to do as a requirement): Compare with weaker auxiliary verb should, indicating mere intent for the predicate's execution; and stronger auxiliary verb will, indicating that the negative consequence will be unusually severe.
• The past tense of "must" is also "must"; however, this usage is almost always literary (see Fritz Leiber quotation above). The past sense is usually conveyed by had to. It is possible to use be bound to for the past also. For this reason, have to and be bound to are also used as alternatives to must in the present and future.
• The principal verb, if easily supplied, may be omitted. In modern usage this is mainly literary (see Housman and Tolkien quotations above).
• Must is unusual in its negation. Must not still expresses a definite certainty or requirement, with the predicate negated, it's the synonym of cannot. Need, on the other hand, is negated in the usual manner. Compare:

You must not read that book. (It is necessary that you not read that book.)

You need not read that book. (It is not necessary that you read that book.)

• The second-person singular (thou being the subject) no longer adds -est (as it did in Old English).

See also

• Appendix:English modal verbs
• Appendix:English tag questions

Translations

Noun

must ‎(plural musts)

1. Something that is mandatory or required.

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

Synonyms

• imperative

Antonyms

• no-no

Translations

Etymology 2

From Old French must, most, from Latin mustum

Noun

must ‎(plural musts)

1. The property of being stale or musty.
2. Something that exhibits the property of being stale or musty.
3. Fruit juice that will ferment or has fermented, usually grapes.
   • Henry Wadsworth Longfellow:

     No sweet grape lies hidden here in the shade of its vine-leaves,

     No fermenting must fills and o'erflows the deep vats.

Translations

Verb

must ‎(third-person singular simple present musts, present participle musting, simple past and past participle musted)

1. (transitive) To make musty.
2. (intransitive) To become musty.

External links

• must on Wikipedia.Wikipedia

Etymology 3

Persian مست ‎(mast, “drunk, inebriated”), from Middle Persian 𐭬𐭮𐭲 ‎(mast).

Noun

must ‎(plural musts)

1. A time during which male elephants exhibit increased levels of sexual activity and aggressiveness (also spelled musth).
   • 1936, George Orwell, Shooting an Elephant, an essay in the magazine New Writing:

     It was not, of course, a wild elephant, but a tame one which had gone ‘must’.

2. An elephant in this sexual and aggressive state.

Statistics

Anagrams

• smut, stum, tums, UMTS, UTMS

Akkala Sami

Pronoun

muśtˑ

1. in me (first-person singular pronoun, locative)

Estonian

Etymology

From Proto-Finnic *musta.

Adjective

must ‎(genitive musta, partitive musta)

1. black (color)
2. dirty, unclean

Declension

Derived terms

• must auk
• mustvalge

Hungarian

Pronunciation

• IPA^(key): [ˈmuʃt]
• Hyphenation: must

Noun

must ‎(plural mustok)

1. must (sweet fresh grape juice that has not fermented yet)

Declension

Romanian

Etymology

From Latin mustum.

Noun

must n ‎(plural musturi)

1. unfermented wine; grape or other fruit juice
2. must (of grapes)

Declension

Related terms

• mustos

See also

• zeamă, suc

Swedish

Etymology

From Old Norse muster, moster, from Latin mustum.

Pronunciation

• IPA^(key): /mɵst/

Noun

must c ‎(uncountable)

1. A kind of soft drink, more commonly known as julmust
2. Unfermented fruit juice

Declension

See also

• must on the Swedish Wikipedia.Wikipedia ^sv

Veps

Etymology

From Proto-Finnic *musta.

Adjective

must

1. black

Inflection

Derived terms

• musteta
• Mustmägi
• mustsil'mäine
• mustverine

Noun

must

1. black

Inflection

References

• Zajceva, N. G.; Mullonen, M. I. (2007), “чёрный”, in Uz’ venä-vepsläine vajehnik / Novyj russko-vepsskij slovarʹ [New Russian–Veps Dictionary], Petrozavodsk: Periodika

Volapük

Noun

must ‎(plural musts)

1. must (new wine; sweet cider)

Declension

Võro

Etymology

From Proto-Finnic *musta.

Adjective

must ‎(genitive musta, partitive musta)

1. black (colour)

Inflection