hall has 23 distinct synonyms spread across 10 of its 13 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.
a large entrance or reception room or area
a large room for gatherings or entertainment
“lecture hall”
a college or university building containing living quarters for students
English writer whose novel about a lesbian relationship was banned in Britain for many years (1883-1943)
United States child psychologist whose theories of child psychology strongly influenced educational psychology (1844-1924)
United States chemist who developed an economical method of producing aluminum from bauxite (1863-1914)
United States explorer who led three expeditions to the Arctic (1821-1871)
United States astronomer who discovered Phobos and Deimos (the two satellites of Mars) (1829-1907)
a large and imposing house
a large building used by a college or university for teaching or research
“halls of learning”
Synonyms, antonyms and the broader and narrower relations for hall come from Princeton University’s WordNet. Full sources and licences.