Due vs Must - What's the difference?

As nouns the difference between due and must

is that due is deserved acknowledgment while must is something that is mandatory or required.

As an adjective due

is owed or owing.

As an adverb due

is directly; exactly.

As a verb must is

to do with certainty; indicates that the speaker is certain that the subject will have executed the predicate

due
English

Adjective
(en adjective)
Owed or owing.

Appropriate.

* Gray

With dirges due , in sad array, / Slow through the churchway path we saw him borne.

Scheduled; expected.

Having reached the expected, scheduled, or natural time.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)
, chapter=1 citation , passage=The huge square box, parquet-floored and high-ceilinged, had been arranged to display a suite of bedroom furniture designed and made in the halcyon days of the last quarter of the nineteenth century, when modish taste was just due to go clean out of fashion for the best part of the next hundred years.}}
Owing; ascribable, as to a cause.

* J. D. Forbes

This effect is due to the attraction of the sun.

* {{quote-book, year=1922, author=(Ben Travers), title=(A Cuckoo in the Nest)
, chapter=2 citation , passage=Mother
Synonyms
* (owed or owing) needed, owing, to be made, required * (appropriate) * expected, forecast * (having reached the scheduled or natural time) expected
Derived terms
* driving without due care and attention * due date * due to * in due time * taxes due * with all due respect
Adverb
(en adverb)
(used with compass directions) Directly; exactly.

The river runs due north for about a mile.

Noun
(en noun)
Deserved acknowledgment.

Give him his due — he is a good actor.

* {{quote-news, author=Daniel Taylor, title=David Silva seizes point for Manchester City as Chelsea are checked, work=(The Guardian) (London), date=31 January 2015 citation
, passage=Chelsea, to give them their due , did start to cut out the defensive lapses as the game went on but they needed to because their opponents were throwing everything at them in those stages and, if anything, seemed encouraged by the message that Mourinho’s Rémy-Cahill switch sent out.}}
(in plural dues ) A membership fee.

That which is owed; debt; that which belongs or may be claimed as a right; whatever custom, law, or morality requires to be done, duty.

* Shakespeare

He will give the devil his due .

* Tennyson

Yearly little dues of wheat, and wine, and oil.

Right; just title or claim.

* Milton

The key of this infernal pit by due I keep.

Derived terms
* give someone his due * give the devil his due
Statistics
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External links
* * *
Anagrams
* ----
must
English

Etymology 1
From (etyl) . More at .
Verb
(head)
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.

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 , , 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
* (sense) Compare with weaker auxiliary verb (should), indicating a strong probability of the predicate's execution. * (sense) 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). * (term) is unusual in its negation. (term) still expresses a definite certainty or requirement, with the predicate negated. (term), 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 no longer adds "-est" (as it did in Old English).
See also
*
Noun
(en noun)
Something that is mandatory or required

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

Synonyms
* imperative
Antonyms
* no-no
Etymology 2
(etyl) must, most, from (etyl) mustum
Noun
(en noun)
The property of being stale or musty

Something that exhibits the property of being stale or musty

Fruit juice that will ferment or has fermented, usually grapes

* Longfellow

No fermenting must fills the deep vats.

Verb
(en verb)
To make musty.

To become musty.

External links
* (wikipedia "must")
Etymology 3
(etyl) .
Noun

A time during which male elephants exhibit increased levels of sexual activity and aggressiveness (also musth)

* 1936 , George Orwell, Shooting an Elephant'' essay in magazine ''New Writing

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

Statistics
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Anagrams
* 200 English basic words English auxiliary verbs English defective verbs English irregular verbs 1000 English basic words ----