* Position: Something situated underneath or below another thing. (e.g., submarine, subfloor)
* Rank: Something lower in rank or importance. (e.g., subordinate, sub-committee)
* Magnitude: Something smaller or lesser in size, amount, or degree. (e.g., subatomic, sub-zero)
* Part of: Something that is a part or component of a larger whole. (e.g., subculture, subcategory)
Here are some examples:
* Submarine: A vessel that travels underwater.
* Subfloor: The layer of wood or concrete beneath the finished floor.
* Subordinate: Someone who is lower in rank than another person.
* Subatomic: Relating to particles that are smaller than atoms.
* Subculture: A group of people with shared values and beliefs that are different from the mainstream culture.
The meaning of "sub-" can vary slightly depending on the context. It's always helpful to consider the specific word it's attached to in order to determine its precise meaning.