https://www.merriam-webster.com/thesaurus/all
Synonyms for ALL: quite, fully, completely, perfectly, totally, even, exactly, utterly; Antonyms of ALL: half, just, partially, partly, halfway, barely, hardly, slightly

https://www.merriam-webster.com/dictionary/all
all: [adjective] the whole amount, quantity, or extent of. as much as possible.

https://strategiesforparents.com/all-is-or-all-are-which-is-correct/
When using "all" in singular form, it's correct to say "all is," but when using "all" on its own, which is in plural form, you should say "all are.". An easy hack to remember: if you can replace the word with "it," then the form is singular. If you can replace "all" with "they," then it is plural.

https://english.stackexchange.com/questions/4863/difference-between-all-and-all-the
According to COCA, "all the <plural-noun>" is extremely common, even in academic writing. It is much more common than "all of the <plural-noun>". I think it is totally standard. This has nothing to do with "all" and everything to do with "the". You should use "the" wherever a definite article is required.

https://www.collinsdictionary.com/us/dictionary/english/all
all year. 2. the whole number of (used in referring to individuals or particulars, taken collectively) all students. 3. the greatest possible (used in referring to quality or degree) with all due respect. with all speed. 4.

https://dictionary.cambridge.org/us/dictionary/english/all
ALL meaning: 1. every one (of), or the complete amount or number (of), or the whole (of): 2. the only thing…. Learn more.

https://www.thesaurus.com/browse/all
Find 79 different ways to say ALL, along with antonyms, related words, and example sentences at Thesaurus.com.

https://www.vocabulary.com/dictionary/all
all: 1 adv to a complete degree or to the full or entire extent (`whole' is often used informally for `wholly') "the directions were all wrong" Synonyms: altogether , completely , entirely , totally , whole , wholly Antonyms: part , partially , partly in part; in some degree; not wholly adj quantifier; used with either mass or count nouns to

https://proofed.com/writing-tips/word-choice-all-of/
We mentioned above that "all" is always followed by "of" when the next word is a personal or relative pronoun. This only applies when "all" is a determiner. You will also see "all" used as a pronoun meaning "everyone," "everything," or "the only thing.". And when "all" is a pronoun, it can be combined with other

https://dictionary.cambridge.org/grammar/british-grammar/all
All - English Grammar Today - a reference to written and spoken English grammar and usage - Cambridge Dictionary

https://www.grammar-monster.com/lessons/all_of.htm
The "all" in "all of" is classified as an indefinite pronoun. It is perfectly acceptable to use "all of" before a determiner. For example: all of the men. all of those students. all of the men. all of his issues. Using "all" reduces your wordcount by a word. Therefore, it is preferred to "all of."

https://ellii.com/blog/answering-students-grammar-questions-when-do-i-use-all-of-the-all-the-or-all
all of the + Ns. Use this pattern when you want to talk about specific nouns.. All of the students in my class studied hard for the test. (plural count noun) I used all of the paper in my notebook to write my essay. (non‑count noun) all the + Ns. Explain to students that this pattern is the casual form of the "all of the + Ns" pattern, where "of" is simply dropped to shorten the phrase.

https://twominenglish.com/all-of-or-all/
Use "all of" before pronouns (us, them) and determiners (the, my). For example: "I've eaten all of the cookies.". However, when talking about things in general without a specific noun following, use "all" alone. Example: "All are welcome.". This rule helps make your sentences clear and grammatically correct.

https://www.dictionary.com/browse/all-
All definition: the whole of (used in referring to quantity, extent, or duration). See examples of ALL used in a sentence.

https://dictionary.cambridge.org/us/thesaurus/all
ALL - Synonyms, related words and examples | Cambridge English Thesaurus

https://www.merriam-webster.com/thesaurus/all%20in%20all
Synonyms for ALL IN ALL: overall, collectively, together, generally, all around, altogether, broadly, all told; Antonyms of ALL IN ALL: strictly, literally, minutely

https://writingtips.org/all-is-vs-all-are/
When you're using the phrase 'all of them,' the only word that should come after it is 'are.'. You wouldn't say 'all of them is' because that wouldn't be grammatical. Your subject has to agree with your verb. You = Are. I = Am. All = Is/Are (depends on context) You can say 'all is well' or 'all of us are well.'.

https://dictionary.cambridge.org/us/dictionary/english/all-in-all
ALL IN ALL meaning: 1. considering all the different parts of the situation together: 2. considering all the different…. Learn more.

https://www.ldoceonline.com/dictionary/all
all people • You say: They want to protect the rights of all people. • You use all people when talking about every person in the world. • You can also say: All people who take part in sport should have regular check-ups. Almost all people with the disease have smoked at some time in their lives.

https://www.merriam-webster.com/dictionary/all%20all
ALL ALL is contained in 2 matches in Merriam-Webster Dictionary. Learn definitions, uses, and phrases with all all.

https://www.collinsdictionary.com/dictionary/english/all
29 meanings: 1. a. the whole quantity or amount of; totality of; every one of a class b. (as pronoun; functioning as sing or.... Click for more definitions.

https://dictionary.cambridge.org/dictionary/learner-english/all
ALL definition: 1. every person or thing in a group: 2. the whole amount of something: 3. the whole of a period…. Learn more.

https://www.britannica.com/dictionary/all
ALL meaning: 1 : the whole, entire, total amount, quantity, or extent of; 2 : every member or part of used with a plural noun or pronoun to mean that a statement is true of every person or thing in a group