Definitions for mustmʌst

Random House Webster's College Dictionary

mustmʌst(auxiliary v. and v.; pres. sing. and pl. 1st; 2nd;)must

(auxiliary verb.)(used to express obligation or imperative requirement):
I must keep my promise. We really must go now.
Category: Function Word
(used to express requirement or compulsion by law, social convention, or morality):
The rules must be obeyed. I must say, you look wonderful.
Category: Function Word
(used to express advisability or desirability):
You really must read this book.
Category: Function Word
(used to express inevitability, necessity, or compulsion by natural laws):
All good things must come to an end. One must eat to live.
Category: Function Word
(used to express logical necessity):
There must be some mistake.
Category: Function Word
(used to express strong probability or reasonable expectation):
You must be joking. He must be at least 70.
Category: Function Word
(used to express intention or determination, often persistence in something unwelcome): if you must know;
Must you repeat everything I say?
Category: Function Word
(v.i.)Archaic. (sometimes used with ellipsis of go, get, or some similar verb readily understood from the context):
We must away.
Category: Function Word
(adj.)necessary; vital:
A raincoat is must clothing in this area.
Category: Function Word
(n.)something necessary, vital, or required:
Getting enough sleep is a must.
Category: Function Word

Origin of must:

bef. 900; ME most(e), OE mōste, past tense of ME mote, OE mot mote2, 3rd sing. of motan, c. OFris mōta, OS mōtan to have cause to, must, OHG muozan may; cf. empty

mustmʌst(n.)

the juice of grapes or other fruit during fermentation.
Category: Viniculture/Winemaking

Origin of must:

bef. 900; ME, OE < L mustum, short for vīnum mustum new wine

mustmʌst(n.)

mold; moldiness; mustiness.

mustmʌst(n.)

Ref: musth.

Princeton's WordNet

must(noun)
a necessary or essential thing
"seat belts are an absolute must"
must(noun)
grape juice before or during fermentation
mustiness, must, moldiness(adj)
the quality of smelling or tasting old or stale or mouldy
must(a)(adj)
highly recommended
"a book that is must reading"

Kernerman English Learner's Dictionary

mustʌst
indicates what is most likely to be true
She must have left it at school.; You must be thirsty after all that running.
mustʌst
indicates sth is necessary or important
You must pay the money by tomorrow.

Webster Dictionary

Must(u)
to be obliged; to be necessitated; -- expressing either physical or moral necessity; as, a man must eat for nourishment; we must submit to the laws
Must(u)
to be morally required; to be necessary or essential to a certain quality, character, end, or result; as, he must reconsider the matter; he must have been insane
Must(noun)
the expressed juice of the grape, or other fruit, before fermentation
Must(noun)
mustiness
Must(u)
to make musty; to become musty