What does sub as prefix mean?

The prefix "sub-" means "under," "below," "beneath," "less than," "inferior," "secondary," or "a part of." It indicates something that is positioned lower, smaller, or subordinate to something else.

Here are some examples of words with the prefix "sub-":

* Submarine: A vessel that operates underwater.

* Subterranean: Located beneath the surface of the earth.

* Subordinate: Lower in rank or position.

* Subspecies: A subdivision of a species.

* Subcontract: To hire someone to perform part of a larger contract.

* Subtropical: Located in a region between the tropics and the temperate zones.

* Submerge: To go underwater.

* Substandard: Below the accepted standard.

The meaning of "sub-" can vary slightly depending on the specific word, but it generally indicates a relationship of inferiority, subordination, or being located beneath or below something else.