Here are some possibilities you might be thinking of, along with their meanings:
1. "For or Against": This is a common phrase used to ask someone their opinion or stance on a particular topic.
* Example: "Are you for or against the new policy?"
2. "For" and "Or": These are individual words with distinct meanings:
* For: Indicates purpose, reason, or benefit.
* Example: "I went to the store for milk."
* Or: Indicates an alternative or choice.
* Example: "Would you like tea or coffee?"
3. "For" in a compound phrase: This might be a mishearing of a phrase like "for all" or "for example."
* For all: This means "in spite of everything" or "despite everything."
* Example: "For all his flaws, he's a good person."
* For example: This introduces an illustration or specific instance.
* Example: "Many animals are herbivores, for example, cows and rabbits."
To help me understand what you mean, could you please provide the context in which you heard or saw "for or"?