| A | B |
| subdivide | to divide into smalle sections |
| subdue | to bring under control |
| subject | a branch of study or knowledge |
| suburb | residences located on the outskirts of a city |
| subscription | agreement expressed by signing your name |
| submarien | beneath the surface of the sea |
| submerge | to sink below the surface |
| submit | to yield to the control of another |
| subsequent | to follow close after |
| subtitle | a heading below the title |
| substitute | a person or thing that takes the place of another |
| subtotal | the total for a part of something |
| subgruop | a group within a smaller group |
| subway | an underground railway |
| sub-zero | below zero; freezing cold |