austerlitz has 1 distinct synonym spread across 1 of its 2 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 town in Czech Republic; site of the battle of Austerlitz in 1805
a decisive battle during the Napoleonic campaigns (1805); the French under Napoleon defeated the Russian armies of Czar Alexander I and the Austrian armies of Emperor Francis II
Synonyms, antonyms and the broader and narrower relations for austerlitz come from Princeton University’s WordNet. Full sources and licences.