subject

nouns

the subject matter of a conversation or discussion
"he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
something (a person or object or scene) selected by an artist or photographer for graphic representation
"a moving picture of a train is more dramatic than a still picture of the same subject"
a branch of knowledge
"in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings"
some situation or event that is thought about
"he kept drifting off the topic"; "he had been thinking about the subject for several years"; "it is a matter for the police"
(grammar) one of the two main constituents of a sentence; the grammatical constituent about which something is predicated
domain category
the branch of linguistics that deals with syntax and morphology (and sometimes also deals with semantics)
is a type of (narrower)
(grammar) a word or phrase or clause forming part of a larger grammatical construction
a person who is subjected to experimental or other observational procedures; someone who is an object of investigation
"the subjects for this investigation were selected randomly"; "the cases that we studied were drawn from two different communities"
a person who owes allegiance to that nation
"a monarch has a duty to his subjects"
(logic) the first term of a proposition
domain category
the branch of philosophy that analyzes inference
is a type of (narrower)
one of the substantive phrases in a logical proposition
"the major term of a syllogism must occur twice"

verbs

cause to experience or suffer or make liable or vulnerable to
"He subjected me to his awful poetry"; "The sergeant subjected the new recruits to many drills"; "People in Chernobyl were subjected to radiation"
is a type of (narrower)
have an effect upon
"Will the new rules affect me?"
causes
go or live through
"We had many trials to go through"; "he saw action in Viet Nam"
make accountable for
"He did not want to subject himself to the judgments of his superiors"
is a type of (narrower)
yield to the control of another
make subservient; force to submit or subdue
is derived from
is derived from
refer for judgment or consideration
"The lawyers submitted the material to the court"

adjectives

possibly accepting or permitting
"a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation"
being under the power or sovereignty of another or others
"subject peoples"; "a dependent prince"
likely to be affected by something
"the bond is subject to taxation"; "he is subject to fits of depression"
is similar to
acted upon; influenced