| Term | Definition |
| subject | to submit to the authority of, as to ______ oneself to a strict diet |
| subjugate | to conquer |
| subliminal | below the threshold of conscious perception |
| submerge | to plunge under water |
| submit | to put (send) oneself under the authority of |
| subpoena | a legal order requiring a person to appear in court to give testimony |
| sub rosa | in confidence |
| subservient | submissive, as a servant might be |
| subsistence | the barest means to sustain life |
| subsume | to include under a more general category |
| subterfuge | an action used to avoid an unpleasant situation |
| subterranean | under the surface of the earth |
| subversive | tending to undermine or overthrow |