How to pronounce all:
Example: "He was wholly convinced"
Example: "Became all attention"
(with a possessive pronoun) everything that one is capable of.
Example: "She gave her all, and collapsed at the finish line."
The totality of one's possessions.
Everything.
Example: "She knows all and sees all."
Everyone.
Example: "A good time was had by all."
The only thing(s).
Example: "All that was left was a small pile of ash."
Used after who, what, where, how and similar words, either without changing their meaning, or indicating that one expects that they cover more than one element, e.g. that "who all attended" is more than one person. (some dialects only allow this to follow some words and not others.)
Clipping of y’all. used only as a vocative.
Although.