* To describe something of no value or importance: "This argument is nul." (This argument is worthless.)
* To indicate something is invalid or nonexistent: "The contract is nul." (The contract is invalid.)
* To express disapproval or disdain: "Your plan is nul." (Your plan is worthless.)
It's important to note that "nul" is a very strong word and should be used with caution. It can be considered rude or offensive if used inappropriately.
Here are some other related words in French:
* "Nul et non avenu" - void and unenforceable
* "Nulle part" - nowhere
* "Nullement" - not at all
If you want to express that something is simply not good, you could use other words like:
* "Mauvais" - bad
* "Médiocre" - mediocre
* "Inutile" - useless