General antonyms:
* None: This is the most straightforward antonym, meaning "not any."
* Some: This indicates a portion but not the entirety.
* Few: This suggests a small number, contrasting with the totality of "all."
Specific antonyms:
* Individual: This contrasts with the collective nature of "all."
* Specific: This opposes the generality of "all."
Other possibilities:
* No: This can be used as a short form of "none."
* Not: This can be used before a word to negate it, like "not all."
The best antonym for "all" will depend on the specific situation and the intended meaning.