brand has 17 distinct synonyms spread across 8 of its 10 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 name given to a product or service
identification mark on skin, made by burning
a symbol of disgrace or infamy
“And the Lord set a mark upon Cain”
a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
burn with a branding iron to indicate ownership; of animals
to accuse or condemn or openly or formally or brand as disgraceful
“He denounced the government action”
Synonyms, antonyms and the broader and narrower relations for brand come from Princeton University’s WordNet. Full sources and licences.