Compare:
you'll [you will] /juːl/
you will: The longer vowel is on the former word: (y)ou, so the contraction retains it and drops the shorter vowel sound (w) i ll – you'll.

y'all [you all] /jɔːl/
you all: The longer vowel is on the latter word: a(ll), so the contraction retains it and drops the shorter vowel sound (y) ouy'all.

Answer from Kris on Stack Exchange
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Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › english › you-ll
YOU'LL | definition in the Cambridge English Dictionary
1 week ago - YOU'LL meaning: 1. short form of you will: 2. short form of you will: 3. contraction of you will or you shall: . Learn more.
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Quora
quora.com › What-is-the-difference-between-youll-and-Y-all
What is the difference between “you'll” and “Y all”? - Quora
Answer (1 of 13): An apostrophe says something is missing. With you’ll, what’s missing is the rest of the word will. Instead of saying or writing you will, we just squeeze them together into the contraction you’ll. It’s the same for y’all (which I think is what you mean by y all). ...
Discussions

Do Brits shorten "you all" to "you'll"?
You'll is a contraction of you will, not you all. I think the sentence you saw was just an autocorrect error. More on reddit.com
🌐 r/AskABrit
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April 8, 2025
contractions - Why is "you all" contracted to "y'all" and not "you'll"? - English Language & Usage Stack Exchange
"You'll" is not pronounced anywhere close to "you all" and it already means "you will", so it's dead on arrival. More on english.stackexchange.com
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June 27, 2013
What does you'll mean?
Definition of you'll "you will" or sometimes "you shall" More on hinative.com
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2
April 1, 2020
"Y'all" or "You guys"
There is no "better" expression. They mean the same thing. In some contexts, "Y'all" would be considered more colloquial than "you guys." I can't speak to the UK usage. The specific expression "you guys" can be used for women. It's a gender-neutral term. But note that "guy" as a regular noun is exclusively masculine. More on reddit.com
🌐 r/EnglishLearning
191
86
March 25, 2023
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Interrogative adjectives (also called interrogative determiners) are words that modify a noun or pronoun to form a question (e.g., “Which shirt do you like?”). The three interrogative adjectives are “which,” “what,” and “whose.” · Interrogative adjectives belong to a larger class of words, sometimes referred to as “interrogatives.” When “which,” “what,” and “whose” are used to stand in for a noun, rather than modifying it (e.g., “Which do you like?”), they are known as interrogative pronouns.
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The interrogative adverbs are “when,” “where,” “why,” and “how.” They are used to ask questions about time, location, reason, or manner (e.g., “Where do you want to go for dinner?”). · These words are known as interrogative adverbs because the answers they prompt are adverbs, adverb phrases, or adverb clauses. · Interrogative adverbs are part of a larger group of words referred to as “interrogatives.” These words (typically starting with “wh-”) are used to form questions.
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Coordinating conjunctions are single words that are used to link grammatically equal elements (e.g., “cheese and crackers”). There are seven coordinating conjunctions in English: “for,” “and,” “nor,” “but,” “or,” “yet,” and “so.” · Subordinating conjunctions are words or phrases that are used at the beginning of a dependent clause (e.g., “until,” “if,” “even though”). They show the relationship between a dependent clause and an independent clause. · Correlative conjunctions are pairs of words that show the relationship between two grammatically equal elements (e.g., “either pizza or pasta”). T
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Is it you'll or y'all?
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QuillBot
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Is it you'll or y'all?
April 10, 2025 - "You'll" is a contraction that means "you will." "Y'all" is a contraction that means "you all." Which to use depends on your meaning.
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Reddit
reddit.com › r/askabrit › do brits shorten "you all" to "you'll"?
r/AskABrit on Reddit: Do Brits shorten "you all" to "you'll"?
April 8, 2025 -

Just saw a Brit comment on a post: "I can get behind you'll on this one." Then, when a few people questioned the "you'll", vs the American "y'all," they responded "This Brit shortened you'll meaning you all. Maybe it's a British thing."

So...is it?

Find elsewhere
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Dictionary.com
dictionary.com › browse › youll
YOU'LL Definition & Meaning | Dictionary.com
3 weeks ago - YOU'LL definition: contraction of you will: See examples of you'll used in a sentence.
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Longman
ldoceonline.com › dictionary › you-ll
you’ll | meaning of you’ll in Longman Dictionary of Contemporary English | LDOCE
From Longman Dictionary of Contemporary Englishyou'llyou’ll /juːl/ XXthe short form of ‘you will’ or ‘you shall’ You’ll feel better soon.
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Oxford Learner's Dictionaries
oxfordlearnersdictionaries.com › definition › english › you-ll
you’ll short form - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
Definition of you’ll short form in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
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YourDictionary
yourdictionary.com › home › dictionary meanings › you'll definition
You'll Definition & Meaning | YourDictionary
you'll get yours · you-know-what · you-know-what-i-mean · you-know-what-they-say · you-know-who · you-l · you-learn-something-new-every-day · you-ll · you-ll-be-late-for-your-own-funeral · you-ll-never-guess ·
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Quora
quora.com › Whats-the-difference-between-you-and-youll-in-English-listening
What's the difference between 'you' and 'you'll' in English listening? - Quora
Answer (1 of 5): I’m not sure I understand your question. Are you talking about the difference in sound between YOU and YOU’LL? If so, you’ll find several YouTube clips that explain the pronunciation of YOU’LL. None of them are perfect, but I think they’re helpful.
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YouTube
youtube.com › sdictionary
You'll Meaning - YouTube
Video shows what you'll means. you will. you shall. you'll pronunciation. How to pronounce, definition by Wiktionary dictionary. you'll meaning. Powered by ...
Published   April 15, 2015
Views   4K