Focusing on the range:
* Subzero: This is the most common and straightforward prefix, meaning "below zero." It's suitable for temperature scales or any situation where values are below zero.
* Negative: This emphasizes that the values are less than zero. It's appropriate for mathematical contexts or when discussing debts or deficits.
* Minus: Similar to "negative," it emphasizes the subtraction aspect. It's often used in mathematical contexts.
Focusing on the concept of "zero":
* Non-positive: This term encompasses both zero and negative values, emphasizing their lack of positivity. It's more technical and less commonly used.
Examples:
* Subzero temperatures: Temperatures below zero degrees.
* Negative balance: An account with a balance less than zero.
* Minus five degrees: Five degrees below zero.
* Non-positive integers: The set of numbers including zero and all negative integers.
The best prefix depends on the specific context and what you want to communicate.