subject has 20 distinct synonyms spread across 9 of its 14 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
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”
some situation or event that is thought about
“he kept drifting off the topic”
(grammar) one of the two main constituents of a sentence; the grammatical constituent about which something is predicated
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”
a person who owes allegiance to that nation
“a monarch has a duty to his subjects”
(logic) the first term of a proposition
1 of the 14 recorded senses carries no synonym, antonym or related term, so it is not shown above. Every sense, with its definition and examples, is on the full entry for subject.
Synonyms, antonyms and the broader and narrower relations for subject come from Princeton University’s WordNet. Full sources and licences.
make accountable for
“He did not want to subject himself to the judgments of his superiors”