This meaning is about the topic or theme of something, like a lesson or talk. It shows what people study or discuss.
Math is my favorite subject.
The subject of the book is history.
Here, a subject is someone who lives under the rule of a king, queen, or government. They must follow the laws made by the ruler.
He is a subject of the king.
The subjects obey the queen's laws.
In grammar, the subject is the part of the sentence that does the action or is described. It tells who or what the sentence is about.
The cat is the subject of the sentence.
I am the subject in this sentence.
This meaning refers to school courses like math or science. It shows the area people learn about.
History is an interesting subject.
She studies many subjects at school.
As a verb, subject means to make someone experience something, usually unpleasant or difficult. It often means forcing or exposing someone to effects.
They subjected the soil to tests.
She was subjected to strict rules.
Used as an adjective, subject means likely to experience or change because of something else. It shows possibility or risk.
The area is subject to heavy rain.
Her plans are subject to change.
In science or psychology, a subject is a person or animal who takes part in research or tests.
The subject answered many questions.
Subjects were tested in the lab.
