All means the whole amount of something, or every person or thing in a group. It can also emphasize that nothing is left out.
From Old English *eall* “entire, every, the whole,” related to many Germanic words with the same meaning. It is one of the oldest and most basic words in the language.
All is a tiny word with a huge job: it reaches out and scoops up everything in sight. Because it’s so absolute, we often soften it in real life with phrases like “almost all” or “not all,” quietly admitting the world is messier than the word.
Complete word intelligence in one call. Free tier — 50 lookups/day.