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Should vs If - What's the difference?

should | if |

As a verb should

is (auxiliary).

As a noun should

is a statement of what should be the case as opposed to what is the case.

As an initialism if is

interactive fiction.

should

English

Alternative forms

* (obsolete)

Verb

(head)
  • (auxiliary)
  • If I should be late, go without me.
    Should you need extra blankets, you will find them in the closet.
  • * 1922 , (Margery Williams), (The Velveteen Rabbit)
  • It was a long weary time, for the Boy was too ill to play, and the little Rabbit found it rather dull with nothing to do all day long. But he snuggled down patiently, and looked forward to the time when the Boy should be well again, and they would go out in the garden amongst the flowers and the butterflies and play splendid games in the raspberry thicket like they used to.
  • (auxiliary) Be obliged to; have an obligation to; ought to;
  • You should brush your teeth every day.
    What do I think? What should I think?
  • * {{quote-news
  • , date = 21 August 2012 , first = Ed , last = Pilkington , title = Death penalty on trial: should Reggie Clemons live or die? , newspaper = The Guardian , url = http://www.guardian.co.uk/world/2012/aug/21/death-penalty-trial-reggie-clemons?newsfeed=true , page = , passage = Next month, Clemons will be brought before a court presided over by a "special master", who will review the case one last time. The hearing will be unprecedented in its remit, but at its core will be a simple issue: should Reggie Clemons live or die? }}
  • * '>citation
  • (auxiliary) Will likely (become or do something);
  • You should be warm enough with that coat.
  • (modern) A variant of would.
  • * 1817 , Jane Austen, Northanger Abbey?
  • I should like to dine with him. I dare say he gives famous dinners.
  • * 1900 , , (The Wonderful Wizard of Oz)
  • "If our friends, the Scarecrow and the Tin Woodman, were only with us," said the Lion, "I should be quite happy."
  • * 1900 , L. Frank Baum , The Wonderful Wizard of Oz Chapter 23
  • "Your Silver Shoes will carry you over the desert," replied Glinda. "If you had known their power you could have gone back to your Aunt Em the very first day you came to this country." "But then I should not have had my wonderful brains!" cried the Scarecrow. "I might have passed my whole life in the farmer's cornfield."

    Usage notes

    * Should'' has, as its most common meaning in modern English, the sense ''ought'' as in ''I should go, but I don't see how I can''. However, the older sense as the subjunctive of the future indicative auxiliary, ''shall'', is often used with ''I'' or ''we'' to indicate a more polite form than ''would'': ''I should like to go, but I can't''. In much speech and writing, ''should'' has been replaced by ''would'' In contexts of this kind, but it remains in conditional subjunctives: ''should'' (never ''would'') ''I go, I should wear my new dress . * (obligation) Contrast with stronger auxiliary verb (must), which indicates that the subject is required to execute the predicate. * (likely) Contrast with stronger auxiliary verb (must), which indicates that the subject certainly will execute the predicate. * See the usage notes at (shall).

    Synonyms

    * (obligation) ought

    Antonyms

    * (obligation) shouldn't

    Noun

    (en noun)
  • A statement of what should be the case as opposed to what is the case.
  • * {{quote-book, year=2003, title=Overcoming Resistance in Cognitive Therapy, author=Robert L. Leahy
  • , passage=However, we can address maladaptive shoulds by examining the differences between prior events, causes, proximate causes, and moral responsibility. citation

    See also

    * precatory * * (projectlink) * (projectlink) * (projectlink)

    if

    English

    (wikipedia if)

    Conjunction

    (English Conjunctions)
  • Supposing that, assuming that, in the circumstances that;
  • If it rains, I will get wet .
  • Supposing that;
  • I'd prefer it if you took your shoes off.
  • Although;
  • He was a great friend, if a little stingy at the bar.
  • (computing) In the event that a statement is true (a programming statement that acts in a similar manner).
  • If A, then B, else C.
  • Whether;
  • I don't know if I want to go or not.
  • * 1715–1717 , , Alma; or, The Progress of the Mind , Canto III:
  • Quoth Matthew, “”
  • (usually hyperbolic) Even if; even in the circumstances that.
  • * 2004', (singers), “'''If It’s The Last Thing I Do” (song), in ''You Do Your Thing (album):
  • If' it’s the last thing I do / '''If''' it takes me from Tubilo to Timbuktu / '''If''' it’s the last thing I do / I’m gonna dodge every road block, speed trap, county cop / To get my hands on you / ' If it’s the last thing I do.

    Usage notes

    * Specifically a subordinating conjunction.

    Derived terms

    * iff * if and only if * if clause * if only * as if * even if * if so be

    Alternative forms

    * ifen * iffen

    Noun

    (en noun)
  • (informal) An uncertainty, possibility, condition, doubt etc.
  • * 1709, Susannah Centlivre, The Busy Body'', Act III, in John Bell (ed.), ''British Theater , J. Bell (1791), page 59,
  • Sir Fran.'' Nay, but Chargy, if——— ¶ ''Miran.'' Nay, Gardy, no Ifs'''.——Have I refus'd three northern lords, two British peers, and half a score knights, to have put in your ' Ifs ?
  • * 1791 January, "Richard?on’s Chemical Principles of the Metallic Arts''", in ''The Monthly Review , R. Griffiths, page 176,
  • Well might Bergman add, (in his Sciographia,''), if the compari?on that has been made, &c. be ju?t.” The pre?ent writer makes no ''ifs about the matter, and has ?uperadded a little inaccuracy of his own, […]
  • * {{quote-news, year=2013, date=April 9, author=Andrei Lankov, title=Stay Cool. Call North Korea’s Bluff., work=New York Times citation
  • , passage=Even if they managed to strike Japan, the United States or South Korea with nuclear weapons — a big if , given that they do not have a reliable delivery system — they could not save themselves from ultimate defeat.}}

    Derived terms

    * big if *

    See also

    * and * else * false * or * then * true

    Statistics

    *