Likely to be affected by or to experience something.
Conditional upon something; used with to.
Placed or situated under; lying below, or in a lower situation.
Placed under the power of another; owing allegiance to a particular sovereign or state.

The noun, pronoun or noun phrase about whom the statement is made. In active clauses with verbs denoting an action, the subject is the actor. In clauses in the passive voice the subject is the target of the action.
By faulty generalisation from a clause's subject being coinstantiated with one: an actor or agent; one who takes action. The following example would mean that the subject subjects its subjects to its rule
The main topic of a paper, work of art, discussion, field of study, etc.
A particular area of study.
A citizen in a monarchy.
A person ruled over by another, especially a monarch or state authority.
The main theme or melody, especially in a fugue.
A human, animal or an inanimate object that is being examined, treated, analysed, etc.
A being that has subjective experiences, subjective consciousness, or a relationship with another entity.
That of which something is stated.
The variable in terms of which an expression is defined.

To cause (someone or something) to undergo a particular experience, especially one that is unpleasant or unwanted.
To make subordinate or subservient; to subdue or enslave.