subject
//ˈsʌbdʒɪkt//
Noun
A topic or area of study that is being discussed, learned about, or investigated
What subject are you studying at university?
A branch of knowledge studied or taught in a school, college, or university
Math is my favorite subject at school.
A person or thing that is being discussed, described, or dealt with
Let's change the subject and talk about something else.
A person or animal that is used in an experiment or study
The subjects in the study were monitored for three months.
In grammar, the noun or noun phrase that performs the action of the verb in a sentence
In the sentence 'The cat sleeps,' 'the cat' is the subject.
A person who lives under the authority of a monarch or state
The king addressed his loyal subjects.
Verb
To cause someone or something to experience or undergo something, typically something unpleasant
The prisoners were subjected to harsh treatment.
To bring under control or domination; to make subordinate
The emperor subjected the neighboring kingdoms to his rule.
Adjective
Likely or prone to be affected by something, especially something bad
This area is subject to flooding during heavy rain.
Dependent or conditional upon something
The schedule is subject to change.
Under the authority or control of another
The colonies were subject to British rule.