| A | B |
| submarine | a ship that can go under water. |
| submerged | something that is entirely under water. |
| subservient | to be under another person's control; to be required to obey someone's orders. |
| subterranean | something that is beneath the ground or hidden in secret. |
| subzero | means below zero |
| superflous | is extra, or more than what is needed. |
| superheated | something that is very hot. |
| superimposed | something that has been placed over something else. |
| superabundent | more than usual, too much. |
| subculture | one part of a culture |