classicism has 1 distinct synonym spread across 1 of its 1 sense. 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. Its one recorded opposite is Romanticism.
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 movement in literature and art during the 17th and 18th centuries in Europe that favored rationality and restraint and strict forms
“classicism often derived its models from the ancient Greeks and Romans”
Synonyms, antonyms and the broader and narrower relations for classicism come from Princeton University’s WordNet. Full sources and licences.